Bard End-game using Iron Jaws to re-apply the DoTs, why not combine Caustic Bite and Stormbite together as 1 ability that apply 2 dots then we can remove Iron Jaws and saved 2 ability slots.

like from lv6-lv29 just Venomous Bite
then at lv30-lv63 add Wind Bite to Venomous Bite and lv64+ is Caustic Bite + Stormbite

I dunno how much this gonna effect the DPS because both abilities have potency on cast then DoT potency after change we gonna lose 1 potency on cast but we get to DoTs the targets faster, this part I'm gonna leave to devs. I'm sure its gonna make Bard feel smoother to play. In the end it just my opinion, Thank you!