True indeed. A reduction in the max number of stacks (2-3 maybe? 21-24% weapon damage is good but not great) would probably go a long way to help it stay relatively balanced, though.
It might just be me, but I'd rather have something that's harder/more niche to use, but gives better results - rather than something that more builds can incorporate but is only good rather than great.
But like with so many things, this is a lot of personal preference. Like I said, we'll be watching for wider feedback as it gains use (or doesn't.)