So, here I was, with barbecue sauce in my Mids, when a good dude ponderized the following:
"If I put Dark Watcher's Despair: Chance for Recharge Slow into Devices/Smoke Grenade, that's dumb, right?"
*looks at City of Data*
"Yup; the proc power is tagged to notify mobs always, even if the power it's slotted into is tagged to notify mobs never."
...what if?
Debuffs (and mezzes, by design) by and large *do* aggro/notify mobs, with the large exceptions of several -tohit powers (Smoke Grenade, Flash Arrow) and most sleeps. What if that were changed? It makes sense conceptually. Perhaps new IO sets specifically for non-aggro powers, adding procs for an additional/improved (or in the case of sleeps, added in the first place) debuff that won't alert their targets. Or, alternatively, somehow changing the properties of currently slottable procs like DWD when slotted into non-aggro powers...seems like that one may be diving too deep into the spaghetti.