Probably a toss up between Halo Infinite, ES6, and Perfect Dark, but I voted Halo because like many other games on the list Perfect Dark/ES6 doesn’t really have any concrete gameplay info yet.
With the delay, I’m cautiously optimistic about Infinite. 343 has made a good campaign before (Halo 4) and also a subpar one (Halo 5), and that’s my main interest. If the Campaign is good I’ll be down. The multiplayer being F2P also means I won’t need Gold to play it, so that’s nice too. Hopefully the MP is at least as good as 5’s.