I hate to answer every question with "It depends", but honestly that is the answer for most. Because most of these depend on individual players and their ways of handling the issue of the question, but in general attempts to answer...
So here is the questionnaire:
1. Psionics: Good or Bad?
Mostly GOOD, of my 3 players who attempted it in 3E, 2 did it very well and enjoyed it greatly. The 3rd however always seemed to have a different interpretation of them (both from me and the other 2 players) and this caused much strife in and out of the game. Overall, I think the system was fine, but like all things perhaps some players should avoid using it.
2. Tome of Battle: The antichrist or best thing that ever happened?
Never used.
3. Fighter Sux: Yes or No?
NO, NO, and NO! If my players knew how to maximize ANY class at all it was the fighter, if anything they invented Fighzilla!
4. Wizard and CoDzilla overpowered to the point of game disruption: yes or no?
NO, I can see the possibility of this, but never had to face it. My group was actually always "Wizard poor" and the ones who played Clerics and the rare Druid just did not become over powered for whatever reasons. I also agree that the DM has enough discretionary critters to avoid this also, but I never had to resort to that myself.
5. Your 3E games: Rules as written or houseruled into oblivion?
Mostly RAW, maybe raw would be better. Very few house rules.
6. Does your group optimize, or play more casually?
Of 8 regular players I had 1 optimizer in exotic and special characters. 2-3 were fighter optimizers and casual at everything else, and 4 were just casual.
Never used. My 1 optimizer player played Eberron in another game and loved it, told me I would probably like it if I tried it.
8. Do you currently play more 3E, or 4E?(this question is to see where each group falls in terms of the previous questions)
My 3E group I ran ended in 2005 because of too many RL issues, I played in another 3E game in 2007 and early 2008, and was asked if I wanted to play in a 4E game that never materialized in June. I would play 4E, but I have no desire to purchase 4E products as player or DM and no interest thus far in running it. Depending on RL issues, I will probably seek to play in "some version" of a game in 2009 or possibly start a 3E/PF/AE/BoXM game just because I already have all the books for those. RL issues will probably preclude having the time to run anything though for several more months.