Yesterday I played 2 rounds flying Kylo (with Optics), Holo and Vonreg (both with Daredevil) against 4 T-70's (one of them was Poe). It was a really depressing experience...
Because I've only played two games take everything I'll say with a grain of salt:
I am not a fan of the TIE/ba in a pure ace list. There were a lot of situations where I just wanted to take a stress instead of strain/deplete. Stress doesn't harm your offense or defence while strain or deplete does. I often found myself in situations where Vonreg dodged a couple of arcs but still got shot by a X-Wing. In these cases I coulnd't take a strain because I don't want him to take damage. So I took a deplete and wasn't able to do much damage at all. I also really struggeld with the lack of boost for an action. So often I just wanted to disengage, boost and focus. Only being able to barrel roll first was a huge disadvantage. This fact is also hurting your future turn where you would have needed a different angle for a better approach. But because of a shot is coming in you can't just boost and pray to the dice gods, so Vonreg's staying where he is taking a focus or evade. Daredevil though is a good upgrade with what you can do crazy things.
Comparing this ace list to my imperial aces (Soontir, Duchess, Inqi), the imperials are definitely better (higher bit and better maneuverability with more constant damage).
Imo the Tie/ba might work better with some kind of swarm or mini swarm FO salad. Or maybe I just played it wrong