I agree with the cd on Adrenaline Rush, and what I'd add is the fact that it's so annoying that the ability is wasted if my health dips below 29% and pops up to 30% and stays that way for the entire duration of Rush. I'd love it if it wasn't such a situational cooldown (more then usual cooldowns that is) . When you want to be safe just in case and you pop it at like 40% and you slightly drop below 30 and then you're peeled for, healed or just saved, that's when I can understand why some people actually preffered the old Rush. So yeah, at the very least, a smaller cd would be really good.
But as far as Stockstrike goes, I understand what you're saying but I feel like we're ok with just a root. Yes sin and operatives can interrupt us from 10m (15m with set bonus afaik) but getting outside that range is about 1 global (kolto bomb) if you make sure you Ss when you're not slowed, which, for those classes, doesn't have a 100% uptime. And as far as other classes go, just a root is enough.
I would like some interrupt immunity cooldown though, yes please