Uller
Adventurer
I think anything that paralyzes is scary, and I think save each round is balanced. If you want more oomph from your ghouls just add more of them. Remember too that when a target is paralyzed any attacks are at adv - and any melee hits are auto crits.
You know what? I completely missed the change in the paralyzed condition from the last play test. Autocrit makes them tougher. Nevermind...I'll keep them as written in the MM.
And yeah...I'm fine with the save every round. I want my players and my monsters to be able to act. Losing one round of actions (and all hits are autocrtits) is enough.