My only guess is Lancia. Of course still hoping that all three which are competing now will stay also, but I'm sceptical with Hyundai, more than with M-Sport (they always find the way to be here). For Toyota I don't have doubt, probably they will be more than ready and start showing results right away (haha with ''semi-retired'' Ogier).
I wonder how would they made things work for live coverage if there would be 20+ cars on the grid (Rally1 cars or whatever they will be called). They will surely can't continue just like that with this long stages, showing gentlemans, long intervals or more importantly where they will put Rally2 cars, because right now honestly many people don't have time to watch everything with 10 cars for 4 days straight for a whole day. So I really don't have a clue what needs to be done, rather to implement various cameras again or simultaneous coverage (so the user can eatch whatever they ant or whoever they want)