Was hoping some of the older/simple bosses would get a makeover with the expansion

... but I guess that's not happening at this point.
You know, guys like the flame dog, Fidelitas, the whipper, the snakes etc. that have literally zero abilities. The ones you kill in your maps sometimes without noticing they were there.

I wouldn't count out the possibility of it happening. I think Ambrosia and The Archbishop are the biggest offenders right now.