The Atv might be back in. At halo 2.com, there is clearly a picture of the ATV where a broken up Warthog once was. Can't post a link, the site is all flash. Interesting, since the website was made after they announced no ATV. I hope this one is in. Pirates say no, but then again some people also say the halo 2 leak was intentional (an incomplete version missing levels, weapons, enemies etc.)
Well, they could patch it. But really, they made it so if you want a high rank, you will have to play every map in every gametype. Unfortunately, that makes it harder for people (who don't want a high rank and just want to have fun) to find the kind of match they are looking for. I do not know how unranked games go, maybe they have a server list. But your best bet is to make a mtach and invite your friends.