Just as long as its well thought-out, I'm sure that it will be a great map. Just suggesting ideas that I have known to work.

I might be able to put up a paint-sketch of the map that I am working on, which is a myriad of compact and connected Forerunner structures positioned around a grassland courtyard, with a pair of two-way teleporters (conveniently located near to the flags) taking you to the opposite side of the map (Red Base in the north, Blue Base in the west). The layout is similar to Terminal, the compact and dual-level aspect is inspired by Chill Out, and the environment is inspired by Ascension. Plus it will have waist-high grass in many of the outside areas. All weapons and vehicles are unmodified by the way.