Jan and Dash will have way better range control and PS than multi-TLT lists. Consequently, they'll be able to nibble the edges of formations, probably killing one ship a turn with only one ship (or no ships) returning fire. A TLT block would have to try and box them in somewhere to get lots of shots on Jan, but then she and Dash can boost into their Range 1 gaps for a safe turn before going out to the edges again. That's how I see it happening anyway.
I think the biggest mistake people will make with these lists on paper is to assume you'll be able to concentrate all guns on one target consistently. With the PS and dial of most of the carriers in massed TLT lists, it's just not going to happen.
In general it is not a bad list, but it depends what they are flying against. Higher PS lists can take advantage of the R1 holes or staying out of arc to get thrusters.
The build I have been running, PS8 HLC/FCS BroBots for example, will eat PS7 Dash + PS8 Jan for breakfast. If Jan is out front then Jan will fire twice (at most) and Dash will get the +1 die once, and then it will be 2 BroBots vs Dash. If Jan is in back then on the first turn the bots 2v1 focus fire on Dash and Jan gets no shot. Either way, it won't come close to the firepower and positional ability of Autothrusters + HLC + FCS + Gunner that moves after Jan.
You might run into a similar problem against mobile PS9 lists, or even Kenkirk+Palpatine / Fel.
I agree. Brobots would likely eat this for breakfast, lunch and dinner. You would have to pull off some impressive flying. If they don't have VI you do have the PS advantage. Otherwise you are kind of screwed. I was just impressed how effective it was against non-mobile lists.
I'd like to run it against Fel/Deci combo. I think if you can kill Fel off early you have a shot. I think you would need to use the rocks to keep the Decimator at a distance and hopefully keep Fel out of the donuts.
You can also run Dash with Mangler. You don't get the outright damage of the 5 dice HLC, but the crit can make up for that. Also, Dash no longer has a donut hole. It leaves you 3 points to throw a Procket on Dash. Not too helpful but you don't really need a 3 point bid.