I don't think it's reasonable to expect them to make us like Moonkins or Shadows when it comes to multidotting in such scenarios, because compared to the past our aoe is significantly stronger. The only thing I'm expecting (if that) is for them to make us shine at council fights again.
Even so, if they changed Writhe to ramp up faster and deal more dmg it'd help us with relatively short lived adds too. But I'm betting the only thing they'll do is make Writhe deal more dmg. And I'd be ok with that, actually. Good ST, good sustained multidotting, okish aoe. Can't have it all, can we now?