for doing what? hairy carpets? beautiful virtual girls? toys? You architecture and furniture guys offten forget, that this is not the only usage of 3D. I finished an animation project this year where the main characters were 4 bears. I did it with Octane cause the deadline was tight and guess what.. no fur on bears.. only textue.
1) As a stopgap for Particles and Volumetrics, a full featured implementation of OpenEXR 2.0's new Deep Data feature would allow you to more easily comp those passes generated from other sources. If it was a choice between having OpenEXR 2.0 in 6 months or Particles/Volumetrics in 12 months, I would opt for OpenEXR 2.0. 2) Please consider (if technically feasible) adding OpenVBD or Fields3D ...
I have a feeling that for three. at least three versions of Octane is not developing on its own - it just grows various features like a Christmas tree beautiful toys, but the engine itself remains the same, without significant improvements.