The motors in the 50 Ls (going all the way back to the 50/1.0 L days), and 85 Ls have never been speed demons, and won't likely ever be - that's a lot of heavy glass to move around in there... The design(s) are also much older than you might think..."2005-2006" doesn't tell the whole story. The 85/1.2 I came out in 1989...the mk II came out more recently, but optically it's not very different - the motor is updated and the coatings are updated...that's really about it. Go back to the Canon FD days and the FD 85/1.2 isn't terribly different from the current EOS version given the amount of time that has elapsed since then.
I doubt we're going to see super-overhauls of these lenses for quite some time...if ever. There's only so much you can do with lenses this fast in terms of getting wide open sharpness or focusing speed.
Even the $10K Leica Noctilux 50/.95 isn't perfect, so it's pretty unlikely that you're going to see a major improvement to what are already very good lenses at a price that is anywhere in reach of a typical human being.
So no, they aren't perfect, and likely will never be - but if you buy one of the current ones, you'll have the best autofocus, 35mm frame-size 50mm f/1.2 and 85mm f/1.2 lenses ever made on planet Earth. So that's pretty good. (The Leica 50/.95, and the Zeiss 50/1.2 and 85/1.2 manual focus anniversary editions made for 35mm Contax might be slightly better...maybe.)