@Sati_Sati
I really support this "fourth ability" idea. I know it'd be a huge undertaking, therefore unlikely, but it could spice up a lot of things.
Also, I've been saying this since Poe got his fourth ability for his X-Wing. Sure, it's "just a speed boost" - but wait, a lot of hero ships have that as one of their primaries, with only two other abilities remaining...
The Falcon is by far the most crippled ship - and we're supposed to level up THREE of them! It's extremely slow ("fastest ship in the galaxy", right?), and extremely big. If someone really wants to kill you, he kills you, and that's that. When this "someone" is actually 3 people, then you're basically dead on spawn.
Rey's version is great with the repair function, but pretty bad in every other way. Hard Lock for the Falcon is totally useless, you just give a reason to your target to be even more evasive - and without speed boost, you can't even make half a turn before your "target" gets behind you and lights your butt up.