The chance of this post being far too late is quite high, but I still want to throw it out there in the unlikely case they bring the VAs back for a wave 2.
I really want Mellka to mock others ult lines when killing them. Now that each character has a defined ult line that we’ve all grown to hate, I say we use that dark period to add something to Mell. When she kills someone, she should mock their ult line
Mellka killing Orendi
Mellka: laughs “I get the joke now! It’s funny because you’re dead!”
"I’m not much for math, but I think old fart + scary monster claw = early retirement."
Etc. My ideas were just the best a distracted me could think of, but hopefully gave you the gist.