Mercenary International Alliance - Game Concept

My favorite typ of games are turn-based tactical RPG's, such as Jagged Alliance 2,Darkest Dungeon, and X-COM. In that vein, I wanted to come up with my own universe to create a bunch of concepts for a game-pitch heavily inspired by Jagged Alliance 2. I am also a big proponent of character-customization, and intircate skill-trees and stats, and I wanted to represent some of that variety and possibilities in the concepts. Finally, I'm designing from a point of view with a low-medium budget, where I anticipate the production will have to use the same rig and animation-sets for all male characters, and the same for all female characters. More body-type oiptions and face-looks would of course be desirable, but I'm concepting from a point of view that such luxuries can't be afforded in the first iteration. Cheers!