I never tried any of those SteemIt clones. Steem has some problems, but if people want to solve it, it's not with an exact copy of the code that they'll do it. They will end up with a system with the same flaws or more.
If people want to replace Steem, they need to revamp the whole concept, including the interface. Starting from scratch is the only way.
Scot tokens, and hopefully smt's in the future are helping with that. I'm having a whale of a time with those.
Whaleshares hf4 is far, very far from any Steemit copy, just come and check by yourself ;)