Mine Cart Tactics

This is my recreation of the mine cart map from Triangle Strategy.
Possible ideas for this map are to role play out the mine carts like in the game.  say someone calls or rides a cart and while someone is caught on the tracks, you say they get dealt X damage for being in the path of the cart. or give them a chance to reflex save and roll out of the way.  For my idea under the Pathfinder 2e system you could use 1 action to ride/summon a cart if your on one of the designated spots.  If you summon/ride a cart and someone is on it's path, you could make them roll reflex save, Failure would be bludgeoning damage move to an empty adjacent space, crit fail would be double damage and person who rode/summoned decides which square you move too. Success would be half damage, and Crit Success no damage.  You know something like that.

Leave a comment on how your opinion on how they should work.