I'm glad I found this forum. I've just stripped Win10 off my wife's Miix320 as it was taking 20Gb (yes, not a typo) of a 24Gb SSD. I'd already created symbolic links to a large SD card to make O365 think it was installing to C, but finally we gave up on the slow response, frequent "low storage" messages and other related issues. I found that Pop!_20.10 ran from ISO with no issues and screen rotation worked "out of the box" while "Mint" wouldn't rotate. The only issues are mic and camera, but she'll live with that as the tablet is faster with Linux and there are equivalent apps or ported versions for what she needs.
If anyone has a solution for the mic and cameras then that would be great, but not holding my breath.