brush it clean, like you do with any waterblock
To be clear i meant the coldplate specifically, this part:
View attachment 250471
If that was soldered direct to the die with tight tolerances, you'd be able to deal with heat density on high wattage parts.
I can totally see this happening if these power consumption trends continue.
Partner with a waterblock company like EK with an official top, and let all the other companies make their own ones. You'd have AIO's with a fill port before you could sneeze.