I wish I could tell you what kind of “OSR” game I’d really want to see, then. I think I’ve settled into a phase where FKR, Electric Bastionland, or 5E can cover all my needs.
I guess everyone else’s enthusiasm for an “OSR rules wiki” shows that some people want to see that (again, I swear such a thing already exists, but I can’t recall where). I do think formatting it as a wiki or an online how-to guide would be more useful than as a printed book.
(If you’re really asking what “retroclones” I want to see, I agree with @JustinH: I want to see clones of non-D&D games. But, again, that doesn’t seem to be what you mean.)