I'd like a Spectator mode in general. I remember they used to have them in the 2000's games and you could also set up the grid however you liked. Good times.
In terms of MyTeam, I think this was asked a while ago (or something along the same avenue) and it was believed that they were looking to maintain the aspect of it being a racing game rather than a management game. That's not to say it's not something they've not thought about, but that there wasn't much in the way of intending to incorporate it yet.
I did wonder if people alternate which driver they are, or if they just choose one of their two drivers and stick with them. I did originally alternate, but whomever I wasn't would absolutely destroy their engine during the previous race(s) so I've given up and just choose whichever driver I have more affinity to.
I do think an option where you can manage the drivers rather than play as them would appeal to alot of people, (especially in the supposed demise of F1 Manager) particularly if there's an option where you can jump in and take manual control if needed, but I think that would require a fair chunk of computing power.