@NULLderef >performance on 30 series is kinda crap
Yes, any nvidia GPU after the 700 series is a tyrant that refuses to operate out of legacy mode unless you load up proprietary software onto it (with digital signatures to prevent you from replacing the proprietary software).

There's no problem with Nouveau's performance itself, it's just that nvidia refuses to tell their customers how to use the hardware they sell, thus hard reverse engineering is required to determine how to clock up their cards past idle.

Reclocking for the 700 series isn't finished, it seems to be 50% of max performance even, but those cards are by no means slow (any free software game I throw at a 780 runs great) and the reclocking can only get better.

>isn't i915 bitrotting cause of xe
Considering that the driver for intel integrated on my librebooted thinkpad still works fine on the latest version of Linux-libre, I see no reason why the driver would stop working in the near future.

A lot of the recent changes to such driver appears to be relation to power management via proprietary software for some reason.