Hey hey,
a quick one: does anyone know how to populate the RBD hero object with multiple objects and not have it treat all of them as one entity?

You'll need to use a single node for each object.

Okay, I know that. So there is no other way? I mean it can handlereplicates added inside dops using $OBJID, thats why Im wondering that it cant handle multiple objects comming from sops.

I wouldn't combine duplicating DOP Objects with packed primitives, you are creating a lot of unnecessary overhead

just duplicate or instance packed primitives in SOPs and use a single RBD Packed Object to handle all your pieces regardless of whether it's 1 or tens of thousands

It seems to easily work when just using unpacked RBDs with an rbd fractured object in dops. So it gives interactions with fluids, even inheriting multiple RBDs. Just another question: how do I get unpacked rbds to follow animations? The usual attribs (animated, active etc.) dont apply?

Using the parameter "deforming" brings in the sop level anim. I think there is an attrib called animategeo. Unfortunately I cant overwrite it for specific elements.