I'm no longer playing cash, but I wouldn't mind the changes if I did because seating scripts have become ridiculous and hard to battle.
I've never been a fan of HU because I don't like to elbow my way. I'd rather sit in a 'warm company' with 5 players of various skill and have the profit shared with other regs but get it 100% of the time with no need to pay extra rake while battling the regs.
The changes are going to slow down the unbearable pace of skill gap increase because players will be rewarded less from now on for becoming better or more 'tech-savvy'. They'll be getting seats of the same quality no matter what.
The focus will now be on learning to play at as many tables as possible with decent quality (only a few genii like No_Ola can mass-multitable with stellar quality), almost inevitably at lower stakes than before the change. Regs will no longer be 'slacking' in mile-long waiting lists.
(Of course, I assume above that such changes will be made by Stars and other major rooms soon too.)
What I don't like is that a lot of cash game regs will switch to tournaments as a result (in particular, Spins will fill up, more than before, with former HU cash regs)