It doesn't do much for me either, I'm already dreading the social aspect and playing with friends. It's why I wrote into the mail sack about whether lone wolves like me could play by ourselves and they responded yes.
I don't think it's meant to replace Halo at all, just like Starcraft doesn't replace a Civilization or Saints Row replaces a Grand Theft Auto.
All it is, is a new first person shooter made by the studio that brought you Halo 1-3, ODST and Reach. That alone is enough to get you excited.
Now sure someone expecting a 4v4 slayer with equal starts may be disappointed, but any gamer should be excited at a new game that promises to change the genre and how we play.
I get excited just like I do when seeing a game like Watch Dogs etc. I'm all in favor of new games/experiences.
EDIT: I can easily see it turning into a big series. I mean look at Mass Effect. Came onto the scene in 2007 and already rivals Halo in terms of fans, books, comics, almost even games. It all depends on how it plays. In fact I think I probably know more about the Mass effect franchise than anything about Halo post Reach. I've yet to read any new forerunner books, disliked the Halo 4 story etc.
