Okay, so I've decided to go back and redo Orchestra, using a system that I'd been working on for a while.
Here's the short and sweet:
2d20+modifiers capped by a limit as a core mechanic; I want people to be able to play with fewer than six dice for the whole table, which means a couple pairs for the GM and one for any player who's acting.
A standard Attribute/Skill system (Attribute+Skill=limit, Skill=base modifier).
Combat system that includes both Depth and Trauma as a measurement of damage; intended to make combat with psychic powers and firearms more engaging; you could warp someone's face into oblivion, but that's not going to pass their body armor, and choosing firearm loadouts will be an important tactical decision.
Resource-bidding psychics system (technically, Dominance, but I'm using the simple term for discussion's sake), where characters who can use their powers only get a few points a day/session; since willpower is a driving force of this, and psychic powers can be exercised without [spoiler][/spoiler], this serves as an Action Points-styled system with the potential for more specialized uses as well for those trained to do so.
And, of course, my Orchestra canon, drawn from all the sources so far.
Any thoughts?