Would it make sense to release a first iteration of zimba with limited scope? Maybe just those 8-bit cores that are ready. This could help establish demand and identify issues with design or implementation. Not to doubt Kevtris' skills, but the 16-bit system cores will be a huge challenge to get right.
Is there a "buy Kevtris a beer"page anywhere? Kevtris'projects are all impressive and I wish the best of luck, no matter what the result.