I saw a screenshot in a xbox 360 magazine which suggests you can change armor abilites in campaign, if this is avaliable for forge, then it could have massive potential. Apart from that there are a list of priorites to be made. 1. Puzzles heavily rely on glitches, puzzle makers must prioritize discovering which glitches discoverd in Halo 3 make it to halo reach, bear in mind that halo reach holds a new game engine with many new glitches to discover. 2. Experimantation is a must, make a list of pros and cons with every usable object in the game. 3. Exploriation, decide which areas of the map you want to use. Many great maps use the maps features to great effect, and they can be employed in very creative ways. 4. Orginality, try and do something in halo reach that you cant do in halo 3, a sspace puzzle map anybody? Thanks for reading
Well you can place armor abilities in forge, and theres no need for the "glitches" since there are forge options to allow an object to float in place or merge with other objects. So really the only thing think about is what objects on forgeworld are we given that can be used to make doors, elevators, and other switches.
People are already looking through videos of forge world, and the items list to determine how they can make puzzle maps. Everything but the most complicated glitches (similar to ghost merging will be found quickly, especially since people will be actively trying to find them now. You didn't come up with anything new here.