Trait: Assassin's Reward
I’ve used it abit on 30 Acro S/D builds when I’m using SB in the offhand so I’m not switching every 10s. I guess it could work with S/P where you use signet of malice. Any stealth builds that want regen should just go into Shadow Arts since that regen synergizes better and is stronger.
It’s okay, I think the best time I had with it was when I tried out the tanky 10/0/0/30/30 or similar builds, where your ini regen is ridiculously high. Standard x/30/0/30/x builds it’s fine I guess, but I find myself swapping other stuff in. Pain Response will probably give you more effective health in most situations given the amount of conditions flying around nowadays.
The things that people don’t like about it are; not instant (happens after skill completion), low healing/poor scaling, and that other traits are a better fit for most situations.
So, on your scale, I’d deem it more on the side of underpowered. You can only spend initiative so fast, even if you have bags of it. Last time I checked some skills are bugged and don’t give the correct healing for the initiative spent.
Pain Response is usually better in pvp. In pve its not too bad with builds that spam attacks a lot.
You will get much more healing from signet of malice though. I think the reason most people dont use it is because there are simply much better options in acrobatics.