The best comfort "hack" I know of is buying the brand new Mixed Reality Face plate. I just got it yesterday and it is vastly more comfortable than the original VR Face gasket that it came with. I could probably wear the MR Face plate all day without an issue. It even works in glasses mode without the battery pack attached, and while it does seem like it could slip off your face without the battery support behind your head, it stays on fine for normal VR use. For MR use at my desk, I might just put an eye glass strap on the ear pieces so if it does slip it won't fall. I could then hop out of MR and the real world, where I need to put my glass back on, very easily.
My original face gasket never really stayed on properly. It magnetically attaches but it doesn't seem to click into anything. If the headset shifts up or down at all the original gasket slips off it's magnetic mounts. I really hope that they make a new VR gasket design based on the MR version. In the meantime, I might try and make a little shroud to fit around the MR gasket for more comfortable VR use.