I've put some code in place to make it more difficult to interrupt singing call of the cuillen. No guarantees but it should require you to "sing stop" before casting another spell.
I modified one of the older caster procs to honor hermetic resonance. There's probably a few more that ignore it.
The special MUDL potions should work now from within the kangaroo pouch.
I made a change to try to preserve counter data through corpsing. Someone die and let me know if it works.