Hey,

IB's inherent willpower-generation messes with the rage generation. While its good for pure IB/spell builds, it can be problematic for hybrids.
As a suggestion: Change a node, that provides basic features like extra damage (e.g. "magnetized strike") in a way, that it provides willpower generation instead. The damage can be added inherently to IB.

Thus, for pure IB/spells builds nothing changes, while hybrids can avoid the willpower generation.
Admittedly, they would also get a small damage-buff as a side-effect, but you get the overall idea. For the sake of balancing low-level chars, you can make the node accessible early on low levels.

Alternativ: Change the node, so that it provides higher damage, but reduces the inherent willpower-generation to zero.

Best regards and ty

Ps.: I know you have bigger probs atm, but anyways, mb this suggestion might be considered in the future ;).