I've found Expert Handling is tough to rely on with a big ship. Battlefield gets cluttered pretty quickly.

I agree that EH isn't reliable all the time, but for some reason I find it more reliable than EU. The 1 boost seems harder to pull off when the dogfighting starts and isn't necessarily useful unless I'm outright running away from someone. Whereas I find I much more often have a reason to barrel roll whether to arc-dodge (which I also find easier to do with EH over EU) or just tighten a turn for the next pass.

With that said, I don't think EH really belongs on Boba - not because it's bad on him, but rather because focus actions pair so well with his pilot ability. And if you don't care for the R1 rerolls, then you're probably going the VI route which also eliminates EH as an option. In Boba's case, I would vote for EU over EH anyday. Kath is another story.

Engine Upgrade was golden, for me in my Boba/Kath list. I had VI on Fett, and that high pilot skill combined with the extra maneuvering was what let me run down Soontir Fel at the end of one match -- just that little bit of extra turning, being able to adjust firing arcs every turn, let me keep on the pressure and constantly sling a few ride dice every round.

If there was a Modification that allowed for barrel rolls ("Lateral Thrusters" or something), I might consider it over Engine Upgrade...but I hate to cough up an EPT slot for it.

I Suggest

Boba Fett + Inertial Dampeners + Expert Handling

that's it - maybe K-4 security droid or a recon spec, but... Boba really just needs some kind of repositioning, engine is another way to do it, but with his cost, and ability - he strikes me as a ship designed to not need many upgrades

Ex Hand is one of the best upgrades in the game, works well with Boba and Kath's abilities, but is also great on any non-C IG-88.

And, of course, every other ship in the game without a native barrel-roll.

Ex hand is garbage...but then S&V came out and made it awesome

Large base barrel-roll? Awesome. Actions or pseudo-actions regardless of stress (ala sensors/FCS or K4)? Awesome. Target-lock knock-off? Icing on the cake

I Suggest

Boba Fett + Inertial Dampeners + Expert Handling

that's it - maybe K-4 security droid or a recon spec, but... Boba really just needs some kind of repositioning, engine is another way to do it, but with his cost, and ability - he strikes me as a ship designed to not need many upgrades

Ex Hand is one of the best upgrades in the game, works well with Boba and Kath's abilities, but is also great on any non-C IG-88.

And, of course, every other ship in the game without a native barrel-roll.

Ex hand is garbage...but then S&V came out and made it awesome

Large base barrel-roll? Awesome. Actions or pseudo-actions regardless of stress (ala sensors/FCS or K4)? Awesome. Target-lock knock-off? Icing on the cake

You never heard of the Scarlet Cowgirl build, do you?