Happy to see your blog again. 

Bitcoin Cash has Read.cash 
Bitcoin SV has something called powchain or something.
Uprend and Libry are trying to compete with Hive. 

In my opinion We need to focus Developing and improving our Social dApps while Growing Hive Network effects. 

Also I see Twitter/Hive as USD/Bitcoin and we should be using Twitter to trade collaborate/partnerships/onboarding/Network effects to our Hive