The transfer portal is ridiculous, but we have to live with it. Thomas was a good player, not great. In fact, none of our running backs, even Mo, are great. We have had a lot of good to really good backs since Mason, but I would love to get a home run hitter like Maroney again, or a back like Barber. Those two were great talents and backs. Going way back Darrell Thompson was a home run hitter who ran just as hard as Barber. Chris Darkins was another great back who was getting Heisman talk, although never realistic with the team not being any good.
People throw around great back too easily. Mo is really, really good who has taken advantage of the system he is in. I put him in with Thomas Hamner, David Cobb, Rodney Smith, etc - maybe at the top of that list, but a notch below Thompson, Maroney, Barber III, Barber Jr, and Darkins. Mo is probably closest to Darkins, who was drafted in 4th round - that is probably as high as Mo could have hoped to be drafted with his size and lack of speed. All the others were first round except Barber III who was round four and obviously showed by his career should have been higher.
All that said, I hope Mo returns to the player he was before the injury and gets a shot at the league. He would have the potential to have a career like Barber, although he is a step slower.