I agree that not all ships should be cross faction, but we know that Neb Bs (in Legends as a convoy escort) and CR 90s (primarily by the senate) were in use in the Imperial Navy, just not as front-line vessels.
There's no need for Rebel ISDs or Imperial MC80s for example. The crossovers should be limited to what is seen in cannon OT timelines as a general rule.
However, the argument that the Empire only has the ISD where the Rebels have multiple large ships is kinda meh b/c part of the Empire is uniformity and large imposing forces. I think giving them the Neb B, Quasar, and Venator pretty much round out what they should be fielding. The Rebels on the other hand were arming anything they could get their hands on. Civilian cruise liners, freighters, etc. So their ships should be more varied, but there should be limits of how many of certain ones can be fielded. These are things more easily addressed in campaign and narrative play within the current rules though.
This is something I've thought about, to make the Empire more uniform, and the Rebels more varied.
Imperial rule: At least two ships in a fleet must be of the same type (sub variant) and must have at least 4 non-unique sqds, of the same type.
Rebel rule: No more than two small ships may be of the same type (sub variant), only one of each Medium or Large ship type (sub variant), No more than 4 non-unique sqds can be of the same type.
So if an Empire player choose to play a Two ship fleet and he wants one of them to be a ISD I, then the second ship in the fleet must also be a ISD I. And he must at least have Non-unique 4 Tie sqds or better.
If a rebel player wants to have 3 CR90 in his fleet, then two of them must be I.e. an A sub variant and the last a B sub variant, and he can have no more than I.e. 4x X-wing sqds in his fleet. and if wants more sqds he must choose another type. I.e B-wing
I'm not against something like this in theory. Though I'd be ok with allowing a single ISD though. I don't think they moved in pairs as a general rule, but an ISD with a support fleet of multiples of other smaller ships makes sense kinda how our modern carrier groups work.
Well, in Canon, we see the Milennium Falcon chased by 2 ISDs leaving Tatooine Definitely moving in Pairs there...
And then three ISDs chased it at Hoth.
"They're Moving in Herds.... They Do Move in Herds..."
Very true, but were those routine patrols or special task forces? Tatooine probably doesn't have two ISDs just hanging out in orbit daily. I think part of the problem is in the movies we typically don't see the routine, but more special circumstances. I think the most routine we've probably seen was the two ISDs guarding the shield gate at Scarif, a very important installation. I think the suggestion above is a really good starting place for creating Imperial task forces and will probably adopt them into my game play.
I'd like to see some more canon order of battles for both sides. As someone that prefers narrative/campaign play that would shape some of the fleet selections instead of just stat min/maxing.
