Last night I played against a Miko who was able to outheal both himself and his allies for MORE DPS than I could put out as PHOEBE, the highest DPS character in the game.
The enemy team had an ISIC who kept plasma dashing up to the backdoor perch on overgrowth and cheesing Sentry with a Miko in wait at the bottom for quick health top ups.
I ran past ISIC, phasegated on top of Miko, dropped ult, started stabbing with at lvl 6 IIRC (so I had both combo mutations active) and the ISIC dropped down, Miko popped Biosynth and outhealed my damage.
IMO this is just poor design.
Medics should be able to bandage up the wounded behind the front lines to prep them for another assault.
They should NOT be able to heal ON THE FRONT lines for more DPS than single battleborn can put out and keep themselves up simultaneously.
And before anyone argues “just team focus fire Miko”, you should not have to team focus down a frontline healer, an assassin should be able to do its job on a medic.
Almost every game is won by the team with a Miko on it, if you don’t pick it, you don’t win.
On the flipside I will admit I am yet to invest heavily in wound to counter Miko so I am partly to blame, but I think at present Miko is far too effective.