Agreed. I think there's an argument to be made that Mills' arrival, assuming he can pick up where he left off from his Georgia Tech days, was more critical than Mo's return. It's possible guys like Rahmir and Wandale could fill Mo's void a bit if it comes down to it, but it feels like Mills was the piece that would be harder to make up for.
Without knowing how well Rahmir will be as a receiving threat, I’d strongly disagree. Robinson and Washington amplify each other because they both can run routes you simply don’t see out of the backfield, and they can do it out of two back. Together they require teams to either substitute LBs or play mostly zone. Given we play in a LB dominant division, that’s a big deal.
This offense with all of the screens, floods, and quads is extremely difficult to zone. That’s why if we can put more threats on the field, even if none are as good as Stan, we’ll be far more dangerous. Teams could play a lot of man last year.