Intent/Spirit of 3.5?

[RagnaroksChosen]

So I was reading a review of Pathfinder (Here) and it got me thinking I know that Pazio was trying to make 3.75. As I know a lot of people even here are trying there hand at it (Fax specifically comes to mind). I here the term "there going against the spirit of 3.5" and creating radically different game then what d&d is.
It seems hard to me to make fixes for a game that the company that created it can seem to agree on how things work.

I understand that no System is perfect and that there will always be tweeks done by each gaming group.

I guess what I'm asking is the following:
What would a company have to do to gain your trust about making a 3.5 update?
What are your opinions of the ones out there?
Is there a List or a thread on some forum with a general list on agreed on issues with 3.5 ?( i know that is subjective but i mean a few things can be generaly agreed on. Monks aren't great, Wizards > sorcerers)
I know the class Tier system is held in great regard here and on other sites as well.

Any ways was thinking about this stuff and wanted to here others opinions.