Roby does this every year only to sink back into oblivion as a wr option during the season.
The reason for his preseason prominence is Daniels tends to lock onto him only when AA is not there.
Since both Morgan and Cadet give us ST value I wouldn't mind cutting Roby. I doubt he gets picked up since teams will likely view him as only STs and he can sit by his phone if we need him.
I hope we cut Hall, keep only 1 FB and keep 5 RBs. While it would be tough to use that many on gameday, the flexibility helps with injury and in the passing game where sproles, thomas, and cadet would contribute.