The Maxima-A showed up in the Poe dameron comics recently, so there's another possible First Order ship. Resurgence and Maxima would actually be really nice for a ship wave.
Ah, I dunno though. Originally I think about what new ships would be good to round out the factions and I was hoping the Empire could get something impressive to shore up the VSD-ISD hi-hull gun lists that I really want to fly. Instead we get something that immobilizes Demolisher targets and does little to nothing for the big ship lists. So while I could wish for the Nebulon-B2, Resurgence, or even the Venator... we'll probably end up with something like the Rendeli Light Corvette as a flotilla that throws two blues out of every arc with shield 2 and hull 3 to make it a better fighting blue/black platform.
If we think about canon the Arquitens and the Quasar-Fire are there from Rebels. If we end up with the QF, expect Rhymerballs to get even better and/or more commands out of cheaper ships, making the VSD even more redundant and ISDs seem expensive for the same amount of damage possible in a list.
*Shrug*