There wasn't a text field to enter comments so here goes:

• the current documentation is incomplete in that it technically explains what the controls are but offers no insight on how to make use of them. Said another way, it is not user friendly.

• Not everyone renders stills, so animation support and reasonably short render times (within Firefly's limitation) is always welcome.

• more rigging options; i.e. the ability to create custom rigs (possibly not based on spherical falloff) with custom controls, handles, attributes, more efficient IK, IK/FK switches, IK splines, "secondary animation" deformers, matrix or "patch bay-like" ability to connect attributes, so on

• Some would ask for GI, but it seems very impractical at its current state of development.

• lower res figures (<=4K polys) + rendertime subD smoothing.