Thx for the idea first, but in fact i dont quite like the idea if you don't mind.

I have think of that b4, but I dont tends to go that way, because I think maxwell is a render engine that don't do trick!
I think the trick might make your render unrealistic in some point...
anyway that is just me. may be you should show me some result i might chnage my mind later.
hope I don't offend anyone
