Depending on how things work out, I think we should incorporate a few traps into the build. The ruins ingame have traps, and we could make them quite easily ingame with the new trap chests. Hook on up to a dispenser and it would fit the style quite well.
We could do something with pistons hooked up to the chest as well as either a drop trap or a crushing trap. For the crushing trap it could be hooked to a t flip flop so the pistons don't retract after the chest is closed.
Also (Although maybe a better idea for another map) chasebreakers, which are piston doors, which close when you run through then, and don't open for a few seconds afterwards. Useful for running away.
(Before you peoples give me credit, it's not my original concept. The idea comes from something I saw in AC multiplayer. Just saying that now.)