Not a fan. Twitter is filled with bots, fake followers and celebrities. Most followers don't read your tweets so rewards based on popularity is silly, it rewards people who follow back and add bots.
Having a character limit stigmies creativity, it gives a larger voice to the less creative and promotes laziness. Few tweets are creative and many are utter trash.
Watch what SMTs do with Steem, I'm sure DApps will also operate on Steem that are similar to Twitter. I'm not a fan of one liners taking away Steem or people posting one lousy photo and writing a sentence-I sure hope that it's not the future.
Agree we should keep the Steem rewards pool for serious long content and we can have a DAPP+SMT for twitter like application.