As someone that has had a hunter since the beta, I will say this. It's not just Hunters. I'm pretty sure there are a few Titans, and maybe even warlocks, that complain about those things. The only thing over powered about stormcaller, in my opinion, is the amount of time you get to slaughter everyone. Twilight Garrison, to put it simply, is a "juke machine" of sorts. You can dodge almost anything, including supers, if you have this on. They really do need to add a cool down that you can do it for, if there isn't one already. However, I do play my Titan a generous amount. And as a Titan, I will say this- Garrison should be nerfed. Not to the point of unusability, but to where it's still useful.