If Robinson is in shape when he returns (meaning he has good enough cardio moreso than anything else) I would put him at 5T. Because I like what SJD has been doing on the nose and Gaines has been an excellent rotation piece.
The guy who needs to come out is Brock. I'd use Brock fresh off the bench to spell AD, since 3T is probably his best position. And on passing downs stick Brock in the middle next to AD, split those downs between him and Fox.
Brock should be better in fewer snaps. So yeah I do think getting Robinson in there would be huge, but tbh both his signing and Brock's signing look poor to me at this juncture. There's a lot of ball left this season though so we'll see how things develop.
