I personally don't mind the 163s, I do think the B-29s are over priced tho, if they didn't cost so much they wouldn't climb so high, just my theory on that tho!
As far as 163s perks,, The number of B-29s in the war compared to the number of 163s in the war is not correctly represented in perk points, also ,, it's not Berlin, the war incomppased more than that,, there are no rules that say a 163 can't engage a B-29 since it never flew over Berlin, and the war can't be bombed into submission at the strats, the bish show that every other day or so.
I'll probably be returning to an enemy strat soon enough tho,, it's about as real as it gets fighting for alt, going back and forth chasing the wind, dealing with blankets of flak, the view from 30k is as good your gonna find if you want to know what it was really like, and it would be nice if they had more effect on the ability of one side or another to "win the war", or at least , if it paid a worthwhile perk point for the time airborne to land a successful mission!
Again all of this is " just my opinion" you don't have to agree or disagree with it just take it for what it's worth from another player, just like all the other players who have played for years and years,, like you!

Salute!!!