Well, you must be a good mapper. Are you any good, chow? If so, you're in, and I think that's just about all the people I need now! The rules:
Spirit is allowed.
Maps must be sent to me as RMFs, with lights.rad and custom textures (I'd prefer you to use HL textures though).
HEV chargers will be unusable in the final mod, so keep them rare and make them unnecessary to proceed.
If recharging is necessary, place a dead barney, and place one or two batteries by him: I will change them to armour and helmets later on. Don't make them too common though, and don't have armour by every dead barney.
You can map what you like as long as it's in black mesa during the disaster, and not the map straight after the first OR the last map.
Get mapping now!