Dominator Solo Build?

"Is this even possible?"

Yes!

"How do Doms fare when soloing story content?"

I never really had a problem.

"Too squishy?"

Dominators, and by extension Controllers, do have build maturity before they trivialize content. Control sets (both Dominator and Controller) need some fore thought and strategy in use in the early levels. That never really goes away, but when you have limited resources early on the constraints are more noticeable.
Once you get high in levels though the squishy factor is far less of an issue. Also, you want to make smart use of Domination. Domination will protect you from mezz but it will also make your crowd control stronger. You can, and you will, hold bosses. With more recharge you can cycle holds and keep them locked down. Once you start getting to this point more consistently, you'll feel more confident in your survival. Building for some defense on a Dominator doesn't hurt either.

"Are some builds better than others?"
Yes, and this is true of every AT in the game. However, Dominator Primary/Secondary combos aren't quite as lopsided as some pairings in others ATs. I say this even for Gravity Dominators which often get a bad rap.

/r/Cityofheroes Thread