I have just started using Octane, so some of these observations could just be due to missunderstandings, but first impressions are important, right?
-UV maping from SketchUp is only used for the diffuse node and bump? If a make an emiter material the emissive texture is not using the SU UV (but should be imo), so something like matching a flame to the bilboard is very difficult. Drag dropping maps between nodes in the editor would be nice.
-Colorized SU maps are not exported as colorized. (It works in the SU-MaxwellRender plugin, so it is doable).
-I set Octane materials to an object in one file, then imported it to another SU file where that material became swapped to another. Changing the material didn't remove the wrong material. Why?