On a personal level, hearing "gamification" and "recommendation engine" wrt fanfiction sounds like everything I actively and vehemently do not want from a fanfiction platform.

On a more objective level, seeing "monetization" anywhere near fanfiction is asking for legal trouble.

Also I get what you're trying to say with the whole "positive comments only" but what's actually coming across is [valley girl voice] "our writing is perfect here and if you give any constructive criticism, we will construe it as a personal attack on us and call you a **** and *******"[/valley girl]