As someone who has the DJ/Bell combo in two leagues and Bell/McCoy in another I hope you are right about Shady. I'm not quite as confident as I have concerns about the consistenc of the Bills offense and I'm not sure he has all of the quickness he had a couple of years ago, which at times turns his elusiveness into horizontal dancing.
There is an obvious consensus with the top two right now. After that you can make a a case for a number of Rbs. These are all close but I think I'd go:
3. CJA- Still love the situation. He'll have favorable game scripts all year, is involved in the passing game, and I expect double digit TDs. Gets the edge over Murray to me b/c I see Booker as less of a threat to touches than Henry.
4. Murray- Agree with above and will add that I don't think Murray has ever gotten his just due for what he did his last season in DAL. Yes, they have an excellent O-line but Murray is and has been a baller.
5. Forte- People don't think he can keep it up. And he certainly cant keep up his insane touch number of touches. But he fits the offense perfectly and I also think he'll have favorable game scripts on a team with a solid defense, weapons at WR, and a QB who can move the team down the field but has limitations and will rely on the RB, particualrly in the redzone.
Others I would not be surprised to see in, or near, top 5 ROS.
McCoy, Elliot, Miller, Gurley (that offense is horrid tho), Gordon (personally not fully sold but he'll have the opportunity), Hill (would need a Gio injury).