If they buff the damage without making it bursty and you plant now a single mushroom, I wonder if they could lower the CD on Detonate then?
Most of the theory is done based on a Mushrooms vs. Hurricane, but I wonder about situations where you have 3-4 mobs and you are just multidotting and fishing for SS procs, if you could use mushroom as a filler say every 6-secs or so? It surely would help in challenge modes and the like (with low crit rate, SS procs are kind of scarce).
Spreading DoTs would definitely be awesome, but that sort of mechanic looks hard to balance. One can always hope, though.