Adam Yates isn't a better GT rider than Mas, and Mas could easily have replicated what Kuss did in the same position in the Vuelta this year. This is a guy who was the clear cut 2nd best rider in the Vueltas Remco and Primoz won, and looked just as good as them in the high mountains. He's no joke.Kuss, A Yates are better than Mas.
And Mas will 90% do the same schedule as previous years. They cannot afford to not have him present in the Tour and Vuelta. Look what happened during 3 weeks when he wasn't there in TdF - some decent attempts by Jorgensen what what not, but generally, the team was in shambles without a leader. The level was simply not there with Mas out. He's their only real star rider.