Yeah, don't give up just 'cuz it's not the best power deal, surviving a UB is a pretty good feat in itself, I should know, I failed :s
If you didn't like playing the character you should quit, but if it's a question of how "useful" it was or wasn't, that'll be a different thing entirely each mission. The rigger/hacker I had could've been pretty useful last UB (if it hadn't been botched at the start and gotten him killed) but would have had nothing useful to do in this one.
I really did like following the story and your character in it.