You MUST support these TWO options

[GregoryVFX]

1. Refraction glossiness
2. Translucency with SSS and Volumetric mode.

It won't matter if things slow down; just support these two options.
'nough said.

[yusofadibmanesh]

These two things you mentioned will make the rendering time very long.

Chaos Vantage is being updated very quickly and I think they will add at least an option to activate it in the future

[GregoryVFX]

Well....
We need a definition on how "slow".

If it becomes as slow as rendering with the offline Vray CPU, then, no; don't bother.
But, if it becomes even 10 times slower than current "real time" Vantage, then by all means; please, add that option to turn on and off, when needed.

[glorybound]

Isn't ray-trace cheating to get faster render times and keeping good quality? I mean, there isn't some magic technology; it is cheating. I remember the argument years ago with all kinds of ideas to make the render faster by cheating, but people wanted 100% accurate renders. If you add everything back in, then you are back to V-Ray. This is of course in laypeople terms

[yusofadibmanesh]

Isn't ray-trace cheating to get faster render times and keeping good quality? I mean, there isn't some magic technology; it is cheating. I remember the argument years ago with all kinds of ideas to make the render faster by cheating, but people wanted 100% accurate renders. If you add everything back in, then you are back to V-Ray. This is of course in laypeople terms

Yes, exactly

If you add everything back in, then you are back to V-Ray.....