Vyvyan Basterd
Adventurer
Multiclassing is a fairly lukewarm set of mechanical options, so utilizing it as a solution to something that could just as easily be baked in to a class is pretty unappealing. I guess I could see it for the manaball, but whipping shurikens is inherently a monky option.
And again, I entreat WotC to keep the ki power source in lieu of the psionic power source, rather than vice versa.
I won't go into a discussion on MCing here, but I disagree and think that people have not explored it enough yet because of its feat cost.
I was replying to the manaball part, not the shurikens. But were shurikens really a main part of the monk repretoire? IME monks threw shuriken about as often as the greatsword-wielding-fighter used his longbow. IOW, only when he had to.
As for ki vs. psionics, I prefer psionics. It encompasses more ground than ki. I don't see ki users taking mental dominion over an enemy. But I do see psionic users buffing their combat ability (psychic warrior, soulblade, Shadowrun's physical adepts [I know, not technically psionic, but closer to psionic than ki]). Plus, psionics has been a part of D&D longer than any in-game concept of ki has been. And I believe for the first time in 4E psionics won't be an arguably-broken subsystem of the game that drove some people away from it in previous editions.