[Madame Warlock]

I feel like Overwatch almost has a modern day GiJoe kind of vibe to it, lots of potential for Army building(multiple Bastions, Null Sector troops, Talon dudes). It'd be a great line to have at the 4" scale, thus making larger characters like Winston, Roadhog and DVa easier/more affordable to make.

I guess I'd start out with the obvious ones:

Tracer
Mercy
Soldier 76
Reaper
Widow Maker
Winston

But I'd push for fan favourites like Ana, Lucio, Sombra as soon as possible. I can't imagine how neat having a posable Orisa figure would be(though I keep imagining her as DieCast). My dream figs would be Pharah in the "Arabian" style armour from the Anniversary update, Uprising Mercy, BVa or Palanquin DVA, a Lucio vs. Symettra 2 pack, "Shrike" Ana with removable helmet.

You could also multipacks, like a Talon 4 pack - Talon grunt, Sombra, Reaper, Widow(maybe in variant costumes). Maybe a Christmas time 3 pack with Casual clothes Tracer, Emily & Winston in a Christmas Jumper. I think Overwatch has the most toyability out of any video game released in a while - they got a lot of Mileage out of Halo, and quite a bit out of BLizzard's own Warcraft.