+6 ranged looms make hell of a difference afaik. (MW Arb + MW steel bolts, O.o last thing it needs is more damage, give it some reload speed and acc (or whatev) instead imo!)
Armor ones are also quite powerful. (but srsly, they let you survive like one more hit, that is easily offset by a little skill, I don't think they're OP)
The other looms don't make that much of a difference at all, sure is nice to have a little more speed/dmg, but in general if a fully loomed guy beats me in melee, he probably would without them anyways.