I Blame Communism
Banned
Actually that would be kinda difficult IMO. Because of the common lingual conflicts, I would say the Germans were pretty much "the Other" for the Czech national identity to form against. One would have to find a way to get rid of those conflicts very early...
Hmm. While certainly this was a rooted thing with the Hussites and stuff, then I've always been of the opinion that national amity is a lot less deep-rooted than is often thought. After all, in Scotland the English were our "other" and yet even the nats still acknowledge that we're all to one extent or aother "British in sentiment".
And really, Czech language is cool at least in one regard: It cant be that the British Islands have the only language without vowels
"Srpski-Hrvatski" still wins out, I think. Once you learn Cyrillic, Russian is a lot easier to pronounce from text than Czech or Polish!
As for Transylvania, independance, of course! This would then probably cause physical pain for Eurofed, but omelettes and eggs
Hurrah for balkanised eggs!
Unfortunately, my PoD is in 1914 and Transylvania is in dispute as of early 1917 and the end of the Great War... neither side is very keen on that idea.