[Boy Blunder]

How about another X-Men wave? With a loose theme of 'iconic versions of early-series characters' to finish out some modernized lineups. Specifically, characters from the first year of X-Men stories.

BAF: Agent of the Arcane, Lucifer! Likely dubbed 'Agent One' or 'Quist Agent' or something to avoid any problems with a toy named 'Lucifer'.

Beast - Blue, furry, apelike Beast a la Jim Lee, with interchangeable happy, angry, and glasses-wearing heads
Angel - Feathered wings, blue-and-white outfit, with interchangeable Caucasian/short-haired/headsock-up and blue-skinned/long-haired/no-headsock heads
Professor X with interchangeable hands (for doing steepled-finger or power-use poses)
Mastermind with interchangeable 'Hellfire Club/handsome illusion' head
Toad - Classic jester-style costume with interchangeable 'prehensile tongue' head
Magneto - Classic costume with interchangeable helmet-less head and hands (fists/open hands), and power accessories (reuse the Havok/Polaris ones in a blue-violet fade)
Unus the Untouchable with interchangeable hands (open-for-grappling hands/fists)
Vanisher - green costume with floofy collar-wig-thing
Walgreens exclusive - Quicksilver (brand-new version, either classic blue-and-white costume or two-tones Avengers costume, using the slender body-type and Speed Demon's interchangeable hands)