I'm a longterm Octane user but this weekend I started using the Unity version for the first time. I believe I have some suggestions for the dev team that will help first-time users get a positive impression of the product and the possibilities.
First I want to say that I had fun and am intrigued with possibilities. But on to suggestions:
1. Ensure that any sample scenes and installers default to Direct Lighting and a low number of samples. This is important! I opened up the courtyard scene (after a fresh plugin update) and it was poised to take over an hour to render...all because the kernel was set to Path Tracing! This would scare the hell out of a gamer accustomed to real-time rendering. When I switched the kernel to DL the render was pleasing and fast. A new user just doing a test might not have known to change the kernel and might just walk away (forever) in dismay.
2. The samples slider is a mess. It is skewed way too high and it's difficult to slide in desired values under 1,000.
3. With default files and render settings: turn the Depth of Field down or off. First-time users won't be impressed if their hero object is horribly out of focus when they try the product out. They don't yet know how to pick a focus point or adjust aperture.
3. Setup is a pain, and currently it often fails. This weekend I had four crashes and had challenges several times where I'd hit 'Load' and Octane wouldn't load up. Worse, there was no error message. I'm empathic to the devs. I'm sure install/config with Unity is a challenge to code as there isn't a plugin paradigm like you have in c4d or other apps. So how about giving users an ultra-light file that is used for installation only...no heavy meshes and textures. Maybe even just containing a sample sphere.
And related to this...I suggest not embedding the plugin in sample files like Courtyard as such embedded plugins are inevitably out of date within weeks (or days). I was constantly confronted with "Octane must be updated" messages and downloads.
I'll post more as I play around. Again...Despite the bumps I'm excited about Octane in Unity!