We are discussing these issues here at JetBrains. On the one hand, we see that some customers would feel more comfortable seeing Kotlin backed by a Foundation, not a private company. On the other hand, we understand the risks of design-by-committee and similar issues arising.
KEEP is very young, so I think we can make it a lot more lively than it is now. Whether we need a Community Board or some other formal entitlement for potential contributors to the design process, is an open question for now. In any case, Kotlin 1.1 will be designed under KEEP (that we plan to improve as we go). By the beginning of 1.2 design cycle, we’ll probably make up our minds on the matter of more radical improvements.
Will keep you folks updated.