Well here's to hoping it won't be a bug infested mess like the original collection launch was. Though the staged release is really reassuring to me.
I hope we get more stuff to than the last collection. Halo 3 was by far the best of the series(multiplayer for me personally) and we could never access the Halo 3 specific Forge. To me it had the most simplistic design but the best functionality. Keep it stupid simple as I like to call it, and it had never ending fun. Hopefully we get the same level of quality for a forge that includes everything from all games(like assets and whatnot). I remember the good ol' racing days with the hog and mongoose, then having infected games before zombie games became a fad.