Kind of rambling, and I don’t even know if this is possible, but:
Object hierarchy will go a long way, IMO, toward satisfying the posing features that have been requested almost as much as hierarchy. The gap between hierarchy posing and real mesh deformation posing is, I think, seams where objects meet up.
Anyway, if/when object groups arrive, would it be possible to have something like a temporary voxel merge “effect” on an entire group? So the contents of the group are still stored as separate objects, but rendered (and can be sculpted on) as a single mesh. Kind of like C4D’s metaballs, I guess, or MudBun.
This is probably only really a useful feature, though, if posing isn’t planned (though, anything nondestructive is nice for other reasons, too), and there are probably a hundred reasons why it would be more of a pain than just doing posing/skeletons or some other route. It was just an idea I had and thought might be a good compromise if it was easier to implement.
I also recognize that it would likely be pretty taxing on the system, but if it’s optional, that’s probably not too big of a concern. Maybe?