So ive been doing a little research through the board and ive spotted two lists that i like the look of. The plan is the same (remove agility before nuking with Missiles) but they do it a little differently and wouldnt mind some opinions.

Version 1

Ketsu Onyo (38)
Fearlessness (1)
K4 Security Droid (3)
Inertial Dampeners (1)
Burnout SLAM (1)
Engine Upgrade (4)
Shadow Caster (3)

Bossk (35)
Fearlessness (1)
Cluster Missiles (4)
Zuckuss (1)
Dengar (3)
4-LOM (1)
Scavenger Crane (2)
Guidance Chips (0)

Total: 98

View in Yet Another Squad Builder

So this one gets Ketsu up the board ASAP and into position to block/employ her Tractor shenanigans, removing the targets Agility (well, 2 of them) before Bossk closes in and unloads a potential 10 Damage attack with Clusters at Range 1 (3 + Fearless Result + Bossks Effect x2) with Zuckuss and 4Lom making sure it gets through and Crane recovering the missile once it kills something. Downsides is that it requires Bossk to get real close and because of Zuckuss he has to spend a couple of turns clearing stress before he can Target Lock to do it again.

Version 2

Ketsu Onyo (38)
Veteran Instincts (1)
Dengar (3)
Glitterstim (2)
Burnout SLAM (1)
Countermeasures (3)
Shadow Caster (3)

Bossk (35)
Veteran Instincts (1)
Homing Missiles (5)
K4 Security Droid (3)
Boba Fett (1)
4-LOM (1)
Scavenger Crane (2)
Guidance Chips (0)

Total: 99

View in Yet Another Squad Builder

A little more cautious a list though has the advantage of higher Pilot Skill. Still requires Ketsu to SLAM up the board into position but this time she has Countermeasures incase it looks a bit rough. Once setup she can then hunt things like Biggs and remove upto 2 Agility a turn though she can still SLAM straight into an enemy ship and use her ability so if target #1 only has 1 Agility then Bossk already has an option of unloading a potential 5 hits that deny evade and (thanks to 4LOM) focus tokens and again, reloading the missile with Crane. Because Homing Missiles dont use up his Target Lock, the only action he ever needs is a Focus and if its something especially tough he lets a Crit go through and Boba does his thing. (Hi Kylo). The most important thing is that Bossk gets to slow roll and although its not as much damage as the first list, its still nuking most small ships.

Thanks to the players that originally posted these lists (though i have tweaked them a little) for showing me something new. Personally im more of a fan of the second. While the first does potentially more damage (double infact), it requires a little more risk with the lower agility.

So any thoughts?

After having a lot of experience using Ketsu and Bossk, here are my opinions.

I think this list really likes to be PS 9 these days. I get the damage output of Fearlessness, but I've found if you're fighting against lists where the majority of their damage output is at a higher PS than you, it's gonna be a bad match up. You want to shoot before them to proc the Shadow Caster Tractor Beam and to potentially erase a whole ship before it shoots. It's a "my superior offense is my defense" type of list. Lists I've had trouble with is some of the Triple Imp Aces where target priority is a difficult decision and they have 3 good sources of damage output because even if you erase 1 of them, two more have a good opportunity to get behind Bossk if you're not careful. If you're at PS 7, that problem against them is multiplied because now they all (most) shoot before you.

Ketsu REALLY likes (needs) Engine Upgrade. In your second list, Burnout SLAM won't cut it to proc her ability as an action maneuver only once in the game. In the mid to late game, having her moving as fast as she does and boosting to either setup her ability again or get out of a bad shot is very helpful. Spending the extra point and forgo initiative bid to upgrade Countermeasures to Engine Upgrade on your second list is VERY worth it. I can see Countermeasures being helpful against torp boats, but getting into range 1 with the help of an action boost doesn't allow the usage of torps as well.

Ketsu's green maneuvers are far and ahead better than Bossk's, so putting Dengar on Bossk and K4 on Ketsu in your second list will get you more mileage out of each crew's ability. I can see the better setup for the Homing Missile for Bossk doing a green and taking a focus action, but I find myself doing hard 3 turns on Bossk A LOT after the first engagement while Ketsu can just keep doing Greens.

Hope this helps. I personally am running a hybrid version of your two with PS 9, Cluster Missile Bossk, Double Glitterstimed Ketsu along with Engine Upgrade. I've tried Burnout SLAM and in theory should be great on Ketsu, but I haven't gotten as much mileage out of it as forgoing the initiative bid and just taking a 2nd Glitterstim.

I'll see what I can tweak. I definitely want Ketsu at PS9 because if there's one thing better than removing 1 agility before Bossk fires, it's removing 2.

Probably go like this

Ketsu Onyo (38)
Veteran Instincts (1)
Dengar (3)
Glitterstim (2)
Engine Upgrade (4)
Shadow Caster (3)

Bossk (35)
Veteran Instincts (1)
Homing Missiles (5)
K4 Security Droid (3)
Boba Fett (1)
4-LOM (1)
Scavenger Crane (2)
Guidance Chips (0)

Total: 99

View in Yet Another Squad Builder

Dropped Countermeasures and for now Burnout SLAM top get the Engine Upgrade but i could be tempted to put SLAM back on depending on if i want to bother with the 1 point initiative bid. I still keep the PS9 advantage the only thing i wish i could do is get a second Glitterstim but short of dropping Boba Fett i dunno where thats coming from.

As for the Dengar vs K4. I get that K4 will Trigger more on Ketsu, but the Target Lock is far more important on Bossk. He needs it first of all to fire the Missiles and remember with Homing Missiles you dont spend the TL so he will have it to reroll the attack too. That means his action should be Focus to give him maximum attack mods. If i put Dengar on there, it just means im using my action to get the Lock so carrying 2 sets of rerolls and no focus which is redundant. Admittedly Dengar is the superior pick if you go with Cluster Missiles but im happy to go with the long range option here.

Of the two, I'd go VI, but my preference is PTL on Ketsu and Determination on Bossk - particularly because Kylo crew is something you need to think about when considering two-ship lists.

My list is:

Ketsu/PTL/Engine/K4/Title

Bossk/Determination/K4/Dengar/Greedo/Cluster Missiles/Scavenger Crane/Guidance Chips.

It's a very very strong alpha, and as long as something dies in the opening engagement which is really likely, it's probably winning. And either way, it's QUICK which is really beneficial in a really long tournament environment like Euros, Nationals, or System Opens.

consider a score to settle on Bossk. It's zero points and it has a downside, but realistically, if you want to alpha strike something off the board fast, that gives you a 3/8 chance of a crit per die. If you are running cluster missiles, GC's, and Dengar crew, you should be able to push damage thru and split the crit with Bossk. Below is how I have Bossk built in my Bossk/Ketsu list.

Bossk(35), A score to settle(0), cluster missiles(4), 4-lom(1), Dengar(3), Zuuckuss(1), scavenger crane(2), G-Chips(0)

total - 46 points.

I can make an argument to swap out zuckuss, but he is nice against aces like Fenn. Because even with Ketsu, Fenn still has Dice to roll