You actually make a reasonable point with this, I'm so very wary of allowing multiple ability actions, but then again there's the duskblade...we're never gonna be that bad so maybe a change could happen...
Hrmmm...so Hands needs an adendum:
Whenever you take an action with your hands, as a full round action you may elect to use any other hand ability with an equal or shorter action time at a cumulative -2 penalty per extra action. For instance, Jimmy is a 12th level Telekineticist with 7 Hands, he chooses to use 3 of those hands to pick up weapons to aid in flanking with his friends (a standard action) and uses another 3 Hands to bullrush a closing pack of enemies (another standard action). He would have to make all attack and opposed rolls for each of these actions at an additional -2, because his attention is split between 2 different abilities. If he also wished to use his last hand to make a focused shield in this time, the penalties for multiple actions would increase to -4 to all rolls.
Something like that yeah? Made it a full round action because otherwise you'll have people using TK fighting, force blast and far trick in one standard action, then putting up focused shields and shifting weapon positions as a move action. That just seems like too much. Thinking about introducing a feat to drop far trick to a move action and focused shield to a swift action maybe con mod/day uses? We need a few feats to give a TK some options, otherwise they have only fighting style feats to chose from if they want any obvious effect on the class.