Just dropping in the morming to post some quick answers.
I view Tier 3 as a pretty ideal power level; everyone is either a workable Jack of All Trades, or Master of One who can generally contribute in other situations. I guess I wasn't clear enough when I said "All the core classes at about Tier 3." I meant that as a benchmark for where I think the entire system would work best.
Yes, most Feats that aren't caster feats suck, but IMO, that's a design flaw. As a non-caster, I level up, take a feat...And am overall even worse off, as the caster got a better feat, and more spells. That, IMO, fits the definition of a design flaw. Sorry, that's a bit ranty. Not ranting at you, just 3e feats as designed.
For the type of Monk I'm looking for, the 3.e Monk is pretty clearly based on 80s Asian martial arts flicks in my mind, from the slow-falling down cliffs to the exotic hand strikes (stunning fist, quivering palm) or the blocking weapons with hands. Or AC bonus. Making the Monk synergistic raises it to Tier 4, I think. With some actual ability to counter DR, and things like its capstone ability being a distance-unlimited, use-limited version of a 1st-level Wizard spell...Well, yeah. That needs fixing. Badly. The Monk should be a Wushu fighting master, and right now, it's not. Unfortunately, the Monks I found had things like "Immunity to any spell that allows Spell Resistance", or other things like that.
Anyway, hope that's enough for more discussion.