It's already pretty fun, and I'm eager to see it expanded.
Probably obvious, but you could look at Inscryption, Darkest Dungeon, and Slay the Spire for mechanics and general game progression. My biggest hope right now is some bespoke mechanics to differentiate enemies/locations. Maybe different forms of attack markers, like a Closed eye only attacks if they get hit, or a Blind Eye only attacks if you swapped positions.
When assigning cowboys, moving someone between locations and then right clicking gets them stuck and will softlock you.