do you really think we could lose a lot of good creators? Personally I don't. If they are really that good, then they also know it takes hard work.
as for the scammers coming back - yes i guess that would happen, but it would give steemit time to develop more and maybe have improved systems in place to combat it
I think it is obvious that people will leave if they are making just cents, even in third world countries that doesn't go that far, so the logical thing is to leave and try to find a place where they can make more money. And with the probability of new platforms similar to Steem they would probably go there to see what happens.