Maybe this splitting into different countries is not good for Slavs, yet nobody can agree on anything.  Maybe it would be best to be a loose confederation at first, then while honoring the contributions of the smallst groups to move towards a shared identity that still values the contributions of the smaller ethnic groups.

In my country (the US) we started with a comitee of correspondence where the very different colonies exchanged ideas about how we could be independent, while still respecting the rights of th individual and very different smaller colonies. From there we advanced to uniting for self-defence and formed a Continental Army and supportd it with a Congress that represented even the smallest equally.  We united on the idea of independence after forming a loose confederation of States.  After independence we remained a looseconfederation, until the passage of a Constitution created a strong Federal Union.