Now that I've had some more time to think, here are some more tasks that I wouldn't mind seeing again.
The walking with the Tigers Roadblock from TAR 1. (Even if it wasn't much of a task per se, it was still cool)
The Metal Detectors from TAR 2 (With Blake as a special guest to involve you in a scheme.)
Basket Boats from TAR 3 (Not on the elimination station though, tyvm.)
The brutal Ascenders (Make it a general task that both team members have to complete) from TAR 5
The Centrifuge Machine from TAR 8 (Say what you want about the season, that task was cool)
The EZ Pass task from TAR 10.