I think this is important, but I'm not sure how it would work. Some thoughts:
Can Maker, as a DAO, hold copyright? (I'm guessing not)
Could the collective authors hold the copyright instead? This could be doable with the limited # of contributors.
Could nexus / oneup hold the copyright?
Do art assets have different copyright? (i.e. cass contribs)
Lean towards the initial license being strong copyleft (e.g. AGPL), at least until we figure out a need for something else. Could have scope for exceptions.
I think this is important, but I'm not sure how it would work. Some thoughts: