Saeviomagy said:
That's a sign that the entire class should be removed from the game, not that the useless levels should be removed.
LOL.

Well, you have a point. The problem with adding more feats is there are already too many and too few slots to select from. The problem with PrCs is there are too many of them and most have unreasonable prerequisites forcing you to take "garbage" feats like Skill Focus, Endurance, Run, etc.
A PrC that doesn't give a cookie and, for spellcasters, +1 caster level every level, is one I'm not gonna take or progress very far in. I'll take the first level of it if it gives me both, but I can't afford to take a spellcasting level loss...
Like the Mindbender PrC in T&B... I'll take level 1 in it and the Master Summoner PrC in Plot & Poison... I'll take level one in that, too. But progressing further in Mindbender reduces my spellcasting level for some mind-affecting abilities with crappy non-scaling DCs, and taking extra levels in Master Summoner gives me crappy cookies (conjuration only metamagic powers I won't use very often if ever). You have to get cookies every level or playing it sucks. That's the video game mindset of 3e and it's only getting worse as more and more PrCs and feats are added. Nobody can afford not to be a diabolical min/maxing powergamer unless they have a death wish or enjoy seeing themselves regularly upstaged every session by the other players who went for power over flavor.
As to the flavor class concept, well, they could be made into 1 level PrCs you could take at 2nd level. I think there is some weird stigma attached to adding new core classes or PrCs of less than five or ten levels. But some character concepts don't require that many levels to play out their special abilities. Most I've seen don't, official or not. There are still some 2e multiclassing stigmas left over in the rules, whereas in the new crop of d20 games (WoTC or not), there is no penalty for multiclassing and it is considered the norm, and in fact, desirable. Hopefully, 3.5e will address some of these issues.