Can you please tell us more about advanced rigging in D|S.

I don't know if you were talking to me, but since I brought up rigging, I'll answer. :) D|S is supposed to have weight-based rigging, eventually.

Poser 7 is also supposed to have a new advanced rigging system, which is why Jessi is rigged like Posette. Supposedly, Poser's new rigging system will make the buttocks group unnecessary.

I think all rig system are garbage.

Rigging is indeed the biggest problem with Poser (and D|S). It's the area that most obviously needs improvement. So I think both Poser and D|S will be addressing it soon.

Unfortunately, I don't see any way advanced rigging can be cross-compatible with D|S and Poser, unless DAZ and e-Frontier decide to cooperate.