You can add Valero, D'Ambrosio, Asamoah, Candreva, and Ranocchia to the oldies list.
I see it as Conte's meatgrinder. He uses players up and tosses them aside. I wouldn't be surprised if those players Cicero listed make 50 appearances all up, and are all gone by 2022. I suppose if his core is fairly young, he can use the older players are depth workhorses. Barella, Sensi, Brozovic, Martinez, Lukaku, Skriniar, and Bastoni, not a bad list of younger players to have. I'd say it's a good mix, but very expensive and very large. Inter still have a bunch of other players on loan as well, Joao Mario, Radja Nainggolan, Perisic, Politano, and Icardi to name the biggest names.