I dunno.

I'm happy to have FlyI around since they keep the fares out of IAD (which I fly out of almost exclusively) low.

I'm going to be giving them a lot of business this winter to BOS. A big part of the reason is that I have a pretty regular schedule that I can plan far in advance and the fares on those days are super-cheap.

Another plus is the use of the B terminal at IAD. Sure beats taking the moon buggies to C terminal to catch a UAL flight.