Apologies, I didn't mean to sound like I wanted us to be "authoritarian", perhaps more along the lines of "opinionated". By analogy with the CLC: they are forced to make decisions, because there is only one set of core libraries. I don't necessarily agree with all the decisions that the CLC makes, but I'm very glad we only have one set of core libraries.
In GHC we have the dubious luxury of being able to give people optional language features, I'm suggesting we should use this very carefully and avoid forks - which is our current policy anyway - but to be more intentional about it in the way that Joachim suggested. I'm also a fan of an open platform that encourages experimentation, but at some point we have to accept (I believe) that too much of this leads to a poor experience for new users. (that's putting it gently! I'm itching to rant about this some more, but I fear it may come across poorly. One for the pub.)