Oh you’re totally right. I wasn’t considering the fact that the durations were wildly different. Well, community council is supposed to be for more unfiltered discussion, so you get to see me wearing my noob hat while I’m on vacation. 
The diminishing returns idea is interesting, but I think it would be more straightforward to just remove stacking. Both solutions would be susceptible to the “rotation” temptation, but if you’re really min-maxing, the fight often doesn’t last more than the 4-minute Squawk duration, so a single squawk would last the whole fight, and you wouldn’t need a rotation; you’d prefer to have everybody else use a different trinket.
Again, no decision here, just checking in to see what you’re all saying and add some thoughts. 