I really wouldn't mind a second DoT to juggle. Bio III as our single-target DoT, Miasma II/III as an AoE DoT (like Aero III, something I want back for WHM btw), Biolsysis and Shadow Flare as DoTs to use during burst phases (so they have 60s timers like Sonic Break). This can make things more interesting without making it DPS-levels of complicated. I can't say I haven't "zoned out" smashing one button and let the tank drop further than I mean to. I mean, when you get into a certain rhythm, you just keep doing it.