It makes no sense. This is a remake to celebrate 10 years of CE, not Halo as a franchise. It aims to bring back the boldness and uniqueness of the first game and expose it to today’s audience. That includes the maps. People don’t seem to understand that Beaver Creek is only in over Battle Creek due to the ladders factor. It’s a very minor change.
The first Halo has a ton of great maps, many of which have never had exposure beyond the fanbase who still swears by CE. You’ll need the Halo 2 maps for the remake, which we all know is in your rainy day fund for 2013/14 to fill the new-game-every-year goal by Microsoft. If maps like Prisoner, Rat Race, the ORIGINAL Sidewinder (lol Avalanche), any number of the Halo PC maps, or even Chiron were ignored in favor of the usual overplayed maps from later games, I would be incredibly disappointed in 343i.