Between the powers from the weapon mastery ancillary set and martial assault for dominators, there are Nearly enough powers to put together a shuriken throwing ranged set that could be made available for blasters, defenders, and sentinels.
Maybe to give the set some extra flavor a typed damage/side effect gimmick similar to what dual pistols uses. Maybe you could choose between a defense DeBuff or toxic DOT for example. Extra points if we could get graphics to use boomerangs as well.
This would add the option to have a natural ranged character, and is definitely an existing character trope in comics with characters like Captain Boomerang, Bullseye, the Death Throws, etc.