I cannot wait for 2021.... yet another season of boredom, I really wanted it to go to the last race.
Right now, you have to be a factory team to have a chance of a win and a factory junior team (where you buy most of your components from the factory ala Haas, Sauber and Force India) to be competitive.
McLaren and Williams are the two teams that still do most of their own design in terms of components like gearboxes and suspensions and such and they're dead-last because they can't compete nor compare with the factory parts going into the "factory junior" teams.
I believe Williams is going to source a fair bit more components from Mercedes AMG next year so that will hopefully help. Unless McLaren does the same from Renault Sport, I expect they will continue to flounder.