No, nextgen Halo will not make a console an immediate buy just by existing. I would buy a console in order to play any one of Bungie's Halos, but 343i has not convinced me that the franchise is going to reorient itself in a direction I like.1.) If you are a Halo fan, but have been disappointed with Reach and (more importantly) Halo 4, will the eventual new Halo game instantly make you buy the next Microsoft console? I know there will be some that have the means to buy both the PS4 and Nextbox, maybe buying the latter sometime down the line when Halo 5 launches, but in reality most people can't justify dropping 800$ to a grand on consoles alone.
If I only buy one console next-gen, right now I'm leaning more in the Sony direction.
A lot of things about Destiny scare me, but I'm excited and presently giving Bungie the full benefit of the doubt. Even though I've been very disappointed about some things, all of the Bungie games I've played from Marathon through Reach have ultimately, I think, been damned good.2.) As Bungie fans by nature, are you excited for Destiny, even though it seems to be a completely different beast (in most ways) than the Halo games? Are you excited just because it's made by Bungie? Are you excited just because it looks interesting (so far) on its own merits? Combination of those?
I'm not convinced that Destiny will be damned good, but I'm absolutely holding out hope for it.
Also, ODST has a hold on me, and it tells me I should be excited: