Ah... You're a mapper. Well, you could use every kind of trap you want, but make it obviously a trap, players should be able to recognize them.
What type map? If you want to make a map for Xonotic you should be aware of how you play this game. Xonotic is an extremely fast game, and for that reason maps inside houses are nota good idea.
In Xonotic maps you always have to be able to move arount swiftly. You shouldn't just make some rooms. I think you should first take a look at other Xonotic maps. But I think you shouldn't build just another facility, we have plenty of them. If you could make an outdoor map that would be better, we still only have a few outdoor maps.