From the IB feedback thread:
-Bonus feat granted at 5th level
-Cap on bleed stacks, but a way to proc them faster via Eviscerate.
-Removal of 'clunkiness' from using Crippling Throw (range is too short) and Arcane Bleed
-Ticks occurring every 3 seconds, instead of every 6 (even at half power)
Additionally, hoping to see Dart, T.Dagger, T.Axe, Shuriken support with this class.