IMO the Ruby level and above digitals have exceeded the source limit as far as dark dark scene CR is concerned. While a G90 may provide more contrast, the increased contrast does not provide any additional detail or information.
The following provides an example:
While the image on the right has 100x more contrast it does not provide any more detail/nformation.
As long as all shades of gray/color are presented as different to the eye you don't lose detail. You can move the black level all the way up and calibrate to proably still see all the detail on some projectors. But seeing all the detail is only part of the image quality puzzle. The overall effect of the same picture where you see all the detail once with black as black and once with black as milky gray is very different. One has incredible depth, the other looks washed out and flat. One has beautiful glowing dark colors, the other has desaturated milky dark colors. The esthetics of the picture are very different. One is correct, the other is incorrect.
the right pic has deep blacks of course but it looks indeed overexposed, burned whites. i'd like the left pict but with the right blacks.
also forget about massive on off etc if the projector carries thousands of lumens.
though if what i heard is true, we could end up soon with some significant cr and brigthness like 7-10K:1 and several thousands of lumens, good for 5-6meters scope screen MP.
Art: aim for a larger screen, like 15-20ft wide.