i think my biggest wish for the release would be a Layer system.
I know this has been already discussed, and has been mentioned as something that will be added at a later date.

I would really urge you to add it for the release, even if it is a fairly simpled layer system.
A more elaborate system could be developed at a later date.
Ideally it would need to understand layers from 3dm files.

Otherwise it makes, for me at least, 'communicating' with Rhino files difficult,
as well as modelling ( or rather managing) anything remotely complex.