Fortunately, all I had done so far was the $5 starter deposit at GameStop, due in part to a similar train of thought that you had. I figured it would be released at some point in time, but I at least wanted to get my name in the hat, in the event that they didn't.
I sure hope we don't get a halo3. I'm sick of DMR and BR obsessions. They're fun guns, but it gets boring seeing everyone scramble for DMR slayer, or Slayer BR. Try some of the other guns, dudes... seriously. The BR was the akimbo 1887 of H3, I'd really hate to see 343 cave to MPG like Bungie did.
I thought since there wasn't gonna be a Legendary Edition that I should make my own little statue of Master Chief in his Cryopod based on Luke Mckay's art. Then I found out that they're already doing that XD
Now I just have to see what Cortana will look like....