I'm not sure if this is in the right section, but:
If you can make it work well then why not? Whats your plan? I think it would be cool to have different spawns, then you can open up two doors and have two people fight, or everyone at once.
There already is a map like that. I've seen it before on the Steamgamers minigames server, it's pretty good, each team lines up on one side and if a person gets knifed the door of that person team opens and lets one person in.