With a new antminer i hope they return to a previous design with a solid heatsink with actual thermal paste not thermal adhesive like they have been using since the s5+ miners. I know it will take up some more space but the ability to use high quality thermal paste and have quieter fans with more even heat distribution (since the heatsink will be 1 solid piece all the gaps between the current design would help evenly spread the heat over all the chips instead of just that 1 chip) would deff make up for that added space in my opinion. I know others in data centers r more worried about density and the more they can pack in the more they make everyday but in my care im strugglin with findin enough power to run all my machines...i have the space...tons of space but not enough breakers in both locations to handle the load of more machines so i have to figure that out or stick with the 2 locations i have now :/.
A solid heatsink is a terrible idea. It holds its thermal load much longer than individual heatsinks and has less surface area to dissipate with. Go check out the Avalon6 if you want to see exactly how NOT to design a heatsink.