Oh yeah thanks for reminding me, I keep thinking that it needs an OP cost increase, another 5 or so. I'll have a look the ROF too, but I'm a little hesitant about changes there, it's easy to put it in the garbage bin again.
I'll do some playtesting at 26 OP / 6,3 chargedown (7,5 total refire, 320 DPS), if anyone wants to do some home balancing.