If you like RPGs that have tactical gameplay (read: D&D, Burning Wheel, Shadowrun, Savage Worlds, Exalted, etc, maybe Fate in some iterations), then you kind of have two options. You can play a game about fighting (typically, squad-based skirmish fighting) or piloting stuff (typically, small spaceships or mechs, also involving fighting). There's edge cases, sure, but I think it's safe to say the majority of tactical gameplay is really zeroed in on these two activities.
So, this is a brainstorming and workshopping thread. What ideas do you have for RPGs that reward tactical gameplay and crunch, but that aren't about fighting or piloting? How would you support those ideas? What would the product/product line include? Just saying "a game about horse racing" is an uninteresting response for these purposes - I want to know how you'd turn that idea into a tactics-focused RPG.
Bonus points if your ideas play off these ideas in other games, because that's where my head is at: distinct character classes, character powers/stunts/moves, distinct missions/instances/events/encounters.
I've got an idea that I'm going to post here in the next post. I'm super delighted if you challenge it, riff off it, ask about it, etc. I'm also super delighted if you introduce your own game ideas. I'll try to challenge them, riff off them, ask about them, etc.