So now people are just ignoring that there is four games on one disc and blaming it all on the fact that Microsoft had the knowledge that Halo 2 anniversary was coming and its going to have HD cutscenes?
Keep moving those goalposts.
There are four games on one disc.
4 games -> 1 Blu Ray.
4 single player campaigns, 4 multiplayer modes, 4 co-op campaigns, Spartan Ops (activited later, I'm assuming you don't have to download that as well), Forge Mode (x4?). Plus cut scenes for each game, (special HD cutscenes for Halo 2), plus two engines that switch back and forth between old and new graphics. Add in new enhanced maps and new art assets.
I don't think anyone here understands the amount of content being offered for the price of one game.
Does it suck that you're going to have to download 20 extra gb? Yes. Yes it does. It sucks extremely for people who have low data caps and for those who buy on retail. I understand how those people feel.
However for people who buy digital, they can order it and download it now and then download the 20 gb before release day so they can play. For those who buy the retail disc, they can still play while it downloads the 20 gb in the background. There are options to straddle the download and stretch it over days or weeks up until Nov 11 to prevent going over the data cap.
Is that a perfect solution? No it isn't.
But even if Microsoft offered the perfect solution, someone here would find something to complain about anyways (like "omg two discs!? I have to swap discs!!/it takes forever to install!!/which disc do I use first?!"). At least they're trying, and they're being transparent and upfront with people on this forum instead of ignoring us because they don't want to start debates.