My opinion on the whole 'single movie' DVD of the show
I seriously don't think this will happen. It'll be almost impossible to put a 4-hour movie with extras on one disc. Think about it:
1. If they actually do that, it'll definitely be a single disc. I mean, seriously, do you want to watch one half of a movie, then have to get up, take the disc out of the DVD player, put it back in the case, take the other disc out, and then put the second one in the DVD player to watch the rest of it?
2. What the hell is going to happen to the episode Araphull? You know, the episode where three fourths of it are just parts of the title sequence set to a lot of songs? That episode was funny as hell, and I don't want it to be taken out just to show the part where the Peanut Cop gets the fireman hat.
3. If it is one disc, I don't want it to double sided either. I hate those DVDs a lot. They're easy to get scratched, and their lack of disc art makes them look ugly.
4. DVDs don't have that much capacity in them. This DVD is going to have extras. There was a fan art thing on the Adult Swim Message Boards where people who posted 12 oz. Mouse fan art might have gotten it featured on the DVD. Then there's the extra footage, and the 4-hour movie (that includes Enter the Sandmouse and the extra footage). It will not fit on one disc, trust me.
5. Do you really want to see 12 oz. Mouse as a 4-hour long movie? Do you?
Consider all 5 of these things.