I like Fwoosheyman's team box set idea. Small figurines with little to no articulation pop up at various retailers all the time, Disney store among them. A set of mostly re-releases anchored - for collectors - by a few new figures could absolutely kill. For example: Cable, Domino, Deadpool, Cannonball, Warpath, Feral, Sunspot, and Stryfe. Do new facial expressions for the retreads. Warpath and Stryfe get newly sculpted parts while Feral and Sunspot work with existing tooling and new designs. You cash in on Deadpool 2 AND complete a team.
There's a handful of rosters you could present this way, from the 90s X-men to the West Coast Avengers