Somewhat similarly to the others, when I notice WS has just gone down I get Riptide off cooldown and throw a Chain Heal to line up two hasted heals ready. Then it's a quick refresh followed by an immedate LHW/Riptide combination to ensure there's incoming cover. Seems to work well enough, certainly haven't lost a tank yet from WS refresh.

On your other point, like yourself I'm an INT stacker (albeit with IWS) and while I'm close to the line in considering if it's a worthwhile talent, I simply don't see a better place for the points right now. The only other option is Healing Way, and I just don't get that much use out of the spell. I'd rather have extra unused mana so I can cut loose with spam healing in those moments when someone zigs instead of zags and things go all to hell.

For those still interested in this data, my testing on the 3.1 PTR has shown that the phantom +50 mana granted when WS triggers from damage or environmental effects has been removed. This is almost certainly just a standard bug fix, so I wouldn't expect it to be coming back.

glad to hear that, thanks for checking.