As to setting stuff, the setting is Eberron; it's mainly Forgotten Realms stuff that's been disallowed (especially lesser plaintouched races).
@Tr011: I'm certainly considering reducing Warblade levels, if only to dip barbarian for pounce and fighter for a few feats.
I definetly want to stick with an elf, for the sake of qualifying for Eternal Blade levels later on, and want to keep my BAB maxed for the same reasons. As such, I went with half-elf so I could also pick up Able Learner (which makes multiclassing out of Factotum more pleasant).
@Schizek: Sure, the 16 str isn't a big deal, but the stats were rolled. I suppose I could shift it to Con, leaving me with 18 con after dragonborn, though with 10 ranks of warblade I've got a lot of HP anyways.
The big problem with your build is that our tristalt is supposed to be martial/caster/utility. I'll have a hard time arguing that any of those sides is truly martial.
Also, no templates, unfortunately.
I'm not fond of most of the egoist's power list, but I'm planning on getting metamorphasis via expanded power. I honestly don't expect the game to reach level 17, so I'm not worried about greater metamorphosis.
As to specialization, I'm wanting to focus on combat and stealth.
As such, I'm thinking about this:
Side A: Lion Totem Barbarian 1/fighter 2/something with full bab 1/Warblade 6 (picking up pounce, two bonus feats, and 7 levels of warblade maneuvers with an IL of 8)
Side B: Psion 10 (Possibly dipping that one full manifester PrC after working out what is going to get used from complete psionics)
Side C: Factotum 8 (Something else 2: Swordsage 2 is the default. I might also be able to talk my DM into allowing the factotum to use psionic powers through dilettante, which would allow elocator to be used on that side, which would be nice. A friend also pointed me towards the Wildrunner PrC. It requires a crappy feat as a pre-req, but it gives a 10' bonus to speed that stacks with everything, and a +2 str/+6 dex buff that can be used several times a day.
You're right, too (don't remember who said this), but full factotum levels might be usefull, given that psionic-magic transparency is in effect.