I'm sure taking this project on a revised version of 3.5, you have some goals in mind.
I'm sure you have stated them, but I guess I would love to hear a specific list.
So far what I've come up with is:
1) Make a book that can replace The PHB and DMG once it goes out of print.
2) Keep the system as compatible as possible with 3.5, so conversion between the two is relatively quick and painless.
3) Get rid of the "dead" levels characters sometimes get.
4) Make the skill system more usable via consolidation and mechanical makeup change.
5) Alter the feat system to give players (specifically those engaged in melee combat) some more options and perhaps a bit more power and versatility.
6) Change the combat maneuvers into something a bit less cumbersome and distracting to the game, while keeping all the options.
7) Give some of the characters that lack some power and/or versatility (namely the fighter, monk, and bard...hopefully) some improvement so they can get off the 2nd string bench.
8) Even out the classes a bit, while keeping their flavor intact.
9) Make 1st level play with slightly less possibility of a quick demise due to one bad dice-roll.
10) Stay in business, instead of banking your companies future on somebody else's. :P
Is there anything I blatantly missed or is that about it?