If you want party-wide tactical teleportation, then you pretty much have to be a Wizard or Sorcerer. The Wizard gets all the fancy teleportation toys, and there's really too many to hack all of them from the Wizard list into some other list for any one build to manage.
If you're ok with it being just you teleporting around, then yeah, some sort of Psion can do that just fine. I think you'll also get a few non-personal teleportation powers, but I don't remember exactly where they are.
Ghost/MotUH is pretty much the gold standard in Telekinesis shenanigans, but if you grab Telekinetic Force/Thrust/Maneuver from the Psion list then you can still use them all for an extremely low power-point expenditure, and you should still be allowed to qualify for MotUH (since you can do everything the actual Telekinesis spell does). You'll also get to use meta-psionics with these powers, which is pretty awesome considering some of the metapsionic feats.
Finally, I wouldn't go Sorcerer//Psion. I think it's just so much more useful to only have 1 casting side and then buff up the chassis and get some support for the primary shtick with the other side. I would look for being a Sorcerer on one side, and then pick up some kind of dip for the misc. combat feats like Improved Bull Rush or whatever. I think those apply to telekinetic maneuvers, yes?
