(Title sounds negative, but it’s not, I ran out of characters)
I hope Halo: Infinite has fun with itself as much as the early Bungie games. And by that, I mean mainly referencing funny dialogue interactions and Easter eggs. Speaking strictly to Halo 2 and 3, and to a lesser degree Reach and ODST, all these games took their main narrative (mostly) serious when it was at the front, but you could find genuinely interesting references, dialogue (with some help to IWHBYD skull) Easter eggs and sometimes wacky stuff in between.
Halo 4, and maybe Halo 5 (I didn’t play too much of it), has very little in a singular comparison of this stuff.
in Halo 2, you can find a cowardly grunt that doesn’t attack you and insults the brutes, you can encounter an ODST that records a hilarious message for his wife that he’s found somebody else and wants a divorce, and also the dog. You can find a giant soccer ball, and a deadly scare gun.
in Halo 3, grunts will freak out when a CPU controlled Arbiter gets back up after defeat as if he’s a zombie, you can find cavemen in trees, witness two marines argue about the password to a door and flip an Elephant. Grunts will even ask for Sherlock Holme’s hat.
ODST and Reach has these quirks too, but they don’t stick out as much to me. Halo 4 has very little of this, maybe some hidden dialogue occasionally. I’ve heard 5 is similar, but I never completed a play through.
I hope Infinite can have fun with itself. Joke with itself in both the heat of the moment and out of it. I want to hear enemies reference Craig, team mates argue about pop culture references, and so on. It’s really cool to see a game just enjoy being a game sometimes.