well making it a multi level map would be more like the last level on delta halo, you know the control room. which is a good h2 mod map as well i think i'll do a larger lower level with a base and larger upper catwalk with 2 half bases and add new lifts to get up top that way the walkways arn't the only way to the second story catwalk.
just to clear this up here is some images
This is pyroman's map from Memisis and Halomods