I was just wondering if someone made it so you can only control 1 character, but in return you are stronger/enemies are weaker. If there's a mod like this... link?
If you want to solo it just don't use Farsight & Stitch in the first mission and leave them in the recruit pool from then on.
As for making your character stronger, there's a load of munchkin mods in the files section link! If make your opponents any weaker there won't be much point to playing the game.