I think that 262s should only be able to up from certain bases that the allies know about and can cover. Also the high alt spit and p-47 fights will be amazing fun.
You might think so, but not really.
They're not that much fun. Usually the higher aircraft (allied) hold all the cards. 190ds as modeled in this game are simply DOGMEAT to all but early P-47s, where they are fought to a stalemate. We've seen this in many past high-alt FSOs before. The only plane that can compete with allies at alt is the 109K-4 and to a lesser extent the 109G-14, but both of these are limited in alt and manuverability at alt. A P-47 and P-51 can make a nice gentle turn at 30k+ but at 30k a 109 can't even bank without losing 500fpm. Any fight will have to be dragged DOWN before it can be fought, which gives the allies all the cards, bouncing from above, choosing when to attack, when to disengage, flying circles around the LW planes in-game.
Let's face it, there's just no fair setup for super-late-war rides in this game. It's too lopsided IMO.