[Captain Nash]

What a great idea! Okay I'll take a shot too (By the way I love both your lists!)

Captain Marvel:

classic Monica Rambeau Captain Marvel
First Appearance Captain Marvel
Moonstone
Deathbird (I know that's four females but I think that's fine given it's a female lead film)
Wonder Man in Safari Jacket
Scarlet Centurion
Captain Atlas
Captain Marvel (original Captain Marvel)
BAF: Supreme Intelligence

Avengers:
Classic Thor
Tigra
Sersi
Quasar
Graviton
Count Nefaria
Collector
BAF: Attuma(although Atlas came REALLY close, and I'd want to at least pair Lockjaw with one Inhuman)

Spider-Man Far From Home
The wave I've literally pedaled for years and continue to do so because NONE of them have been made:
McFarlane Spider-Man (okay he's been made but it was an SDCC)
Spider-Man India
Classic Vulture (not counting that awful monstrosity in the 2 pack, I mean CLASSIC classic Vulture)
Morlun
Justice
Firestar
Julia Carpenter Spider-Woman
BAF: Classic Scorpion (I did used to have Kingpin or Dr. Octopus as BAF so at least we got that.)

X-Men:
First Appearance Storm (Since Jim Lee Storm appears imminent)
Classic Iceman
Sebastian Shaw
Exodus
Callisto
Nightcrawler (even though I'm sure he's coming in 2020)
Mister Sinister
BAF: Nimrod

The New Mutants:
Selene
Cannonball
Sunspot
Moonstar if she doesn''t get her WG release, otherwise Wolfsbane
Syrin (I'm throwing in one non NM from OG X-Force dammit)
Cypher
Rictor - he was a NM for the last 10ish issues....
BAF: Demon Bear