There's little single cooler finss that come with the GPU cooler that you stick on. The GPU sits directly above 2x120mm noctua fans on the Morpheus (it's really tight in the Ncase) so they should be cooled about as well as the factory cooler. Maybe better, it's hard to say for sure. I'll take some pics when I've got it out of the system.
Should be better in exhaust config if you are currently doing intake - just be mindful of clearance. Feet went from 10mm --> 15mm from V5 to V6, but realistically around 25mm (1 inch) is when you can be sure the fans have sufficient breathing room. Of course raising the M1 defeats the purpose of the size of the M1 (imo), so there's THAT.