(Haiku developer here.) Some of those P=high should really be blockers (and the one blocker currently there is a trivial task essentially there as a reminder to do it while making driver ABI changes.) I should do that, actually.
IMHO, Beta 2 should be held back until _at least_ USB Wifi devices are supported. I can't get most of my laptops to work, and the tried-and-true trusted Wifi USB dongles I use on various ARM projects just don't work because Haiku doesn't support _any_ USB Wifi.