"Upgrade"? I wouldn't qualify changing out R785's as an upgrade. They were a great lever and absolutely not worth swapping out if they are working. Remember they were made for a time when there was no hydraulic option so even though they are without series they were spec'd for Dura Ace level builds.
I do like the ergonomics of the current hoods and there are some minor improvements to the hydraulics (changing the hose over to something more solid BH-59(?) and a better bleed system with the riser for the cup, etc) but otherwise they're the bee's knees.