The trouble with rants is that the internet is full of them and they never really change anything, sometimes it's better to try and be constructive in the points you raise.
I've noticed some multi-variant testing on some of the design elements, and have rolled things out to beta testers first in the past, is there anything juicy behind the scenes powering these features?
Nothing fancy at the moment - just some if blocks in our templates. We'll probably start using redis set membership for feature flags in the future though.