Between the AI getting stuck on terrain, and them running into the same lines of fire repeatedly, games with low player count are almost made worse by the current AI.
Adaptive pathfinding would make them change the path they are attempting to take if:
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They are unable to reach the area they are trying to go to within x amount of time (so if they get stuck on terrain, they will hopefully change direction and get unstuck.
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They are getting hit by a lot of friendly fire. Adjusting where they are trying to go according to how much friendly fire they are taking. This accounts for a lot of different things, such as blocking lines of sight for MGs and snipers, getting hit by flamethrowers, and even walking through friendly barbwire.
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They are getting repeatedly slaughtered in an area they keep running through. Choke points are hell, but with adaptive pathfinding, they would at least attempt to move through alternative routes and/ or flank. Hopefully reducing the amount of tickets that are drained just by AI.
By doing this it would greatly help games progress better and also keep the game more interesting even when the player counts on a specific campaign are low.
*In the event that all paths result in high casualties, it would enable AI to use smoke grenades in order to move up.