Replacing Old Ben with Chopper as a Rebel Tank

It is not a silly idea. If you have other droids in the mix (like R2 and BB8), Chopper also gives them random buffs. He dispels, he counters, he taunts, he has health and protection up, etc. He isn't a direct replacement, but in the right composition, he works very well. AnhaldT101 just put out a great video with Chopper and Nebit on a JTR team. It works well. Chopper gets a bad rap from some, but it is a good toon!