I don't consider Unearthed Arcana to really be 3.5, and I think my opinion is pretty widely shared. I mean, it IS 3.5, to an extent, but its a 3.5 augmented with a bunch of alternate rules and subsystems. I think the writers of Unearthed Arcana, and the people who purchased it, were pretty much on the same page about this issue.
Even WOTC, on their forums, filed Unearthed Arcana in a section labeled "Unearthed Arcana and House Rules."
That being said, I agree that anyone who feels that the various problems listed by the OP exist in 3e, but who doesn't want to switch to 4e, might want to take a look at the PHBII and Unearthed Arcana. And possibly at Tome of Battle as well. And since they're already alternate system-ing up their game, there are some 3rd party products they might like as well.
Even WOTC, on their forums, filed Unearthed Arcana in a section labeled "Unearthed Arcana and House Rules."
That being said, I agree that anyone who feels that the various problems listed by the OP exist in 3e, but who doesn't want to switch to 4e, might want to take a look at the PHBII and Unearthed Arcana. And possibly at Tome of Battle as well. And since they're already alternate system-ing up their game, there are some 3rd party products they might like as well.