The Tie Bomber is a great ship, but it really suffers from the fact that if you equip all of its ordnance slots you can easily spend more on the ordnance than you did on the ship itself!
There really is no need for a Bomber to want to equip every available upgrade. Those slots are there just so that is versatile - you can equip two torpedoes if you want, or two missiles, or just a bomb, or a bomb and extra munitions, or [etc.]... No other ship is expected to fill up every single upgrade slot (not even Fat Han!), so why would this be the case for the TIE Bomber? They just allow for all kinds of combinations of secondary weapons. Given a Bomber's lifespan, (in)ability to get target locks and range restrictions on ordnance, I don't think a Bomber should ever really want to have more than two missiles/torpedoes and a bomb.. which is exactly what fits snuggly in a 4 bomber list.
Would like to see a pilot card with the callsign •"That pilot chick from the TIE Fighter Anime" though. Also actually really like that last special rule.
The main issue always lies in the target lock department though. A Bomber-specific upgrade (mod/title) allowing it to not discard it when firing ordnance would be good, either enabling re-rolls on the ordnance attack, or, if Jonus is present, use him for re-rolls and keep the lock for a second attack later on. That won't solve the difficulty of getting a lock on the first engagement at range 3 though.. how about this:
Long-range targeting system (modification, TIE Bomber only, 1 point.. or 0?)
"Immediately before performing a maneuver, declare to use this card. Skip your 'Perform Action' step this round. At the end of the Activation Phase, you may perform a free Target Lock action."
Probably too much to make it 'acquire a target lock', although I'd love for it to work after performing that beautiful 5 koiogran turn. Or give it a twist.. discard card, skip Action, then, at the end of the activation phase, get a focus and target lock on a ship inside your firing arc.
A BTL-A4 type upgrade could also be interesting, to just add a little bit of extra spice to the alpha strike. "Automated loading mechanism", immediately after attacking with a [missile] or [torpedo] secondary weapon, perform a primary weapon attack. (No further restrictions needed, won't be used too often anyway.)
Or how about an upgrade along the lines of "After performing an attack with a [missile] or [torpedo] secondary weapon, you may acquire a target lock. Then, receive a stress token". This then allows you to, next turn, perform a green maneuver, clear the stress, and get a focus for a strong second ordnance shot. Requires careful planning (given the Bomber's limited dial), but potentially useful despite the limitations.
