I am a developer on Stingray, but I can't speak about future plans or pricing beyond what is announced. - No real-time GI. We have real-time SSAO and Beast for baking bounced light etc. - Not sure what CE3 is, but if it is the video I saw on youtube, then for the most part I don't see anything in there we can't do. Not…
Then don't install it? Plenty of software I own comes with things I don't use. I don't install it or not use the parts I don't want. So you just use Stingray. If that is too much for $30 a month, then don't get it at all? Not sure I see the problem. There may be other options for Stingray in the future. Unreal/Unity/etc…
Integration is imho one of the biggest time wasters in 3D production. Imagine you could seamlessly move assets between packages and engines... but no, it's either the age old .OBJ of Autodesk's closed source FBX, and that's all we have for interchange (yes, there's more but try finding support for in in any engine or…