So Psion is somewhere between a high mid two and a low 1 so I go with Tier 1.9.

Psychic warrior seems like a mid 3 maybe low 3 I don't play them enough to really nail them down so I will stick with Tier 3 (by the way why is everyone hating on duskblade hands down better than psywarrior and competitive with initiators).

Soulknife, darn you soulknife you are such an awesome idea until you actually start trying to build one and realize how horrible they are. I give you Tier 5.5 because not quite 6 material.

On to the Wilder, first off I think the best comparison is probably paladin or even ranger into divine crusader which is tier 3 so I can't see Wilder getting any higher than a tier 3 prc that gives me 9 spells over 10 levels, especially since Divine Crusader can be abused into pretty nasty if you are at a cheese dip friendly table whereas even if I dump all my feats into Expanded Knowledge I still don't favorably compare to divine crusader. I am going with Tier 3.2.