Adding the kingdoms for thankmars rebellion meant they were in for all start dates. Adding Avaria - > Pannonia with Charlemagne meant that a non magyar king of Hungary had his domain renamed to Pannonia. Fixing the bugs we have atm is a far better decision than opening a new can of worms of possible bugs.
Also don't make assumptions about someone incase you make an ass of yourself
So are you against all new feature requests or just this particular one?