okay, so I put Brisfits in. Now the problem, if you thought DFWs and Breguets in 1916 were bad ...
What I want to do is not make planes appear ridiculously early. Putting the Brisfit in for the RE8 isn't great, but for the BE2 in 1915 IMHO we're better off without. By eliminating too early appearances it will at least make early plane sets reasonable, if limited (i.e. - no allied two seaters before 1917).
