Can't buy a purple power crystal on the GTN. Gotta pull it from non-Warrior Columi gear. I'm not talking about disassembling, which is a variant of a greed roll, I'm talking about taking something to mod-rip because you want the crystal or enhancement (which have no main stat.)
You aren't entitled to every piece of loot with your main stat on it. I wouldn't roll against anyone for a companion, but if I'm running a FP for a specific drop I intend to use, I don't care what other people there feel my priorities should be.
You realize you can just use a crit crystal and then swap out a mod or enhancement that has power with one that has crit right? Then you get the stats you need and look you want.