Just a quick idea that I think could really add alot of flavour to the game - a Narrator. Right now anytime a gate breaks or a mission is completed we get a giant text paste all over the screen (which should be made less intrusive, imo) but no audio feedback. Instead of some dingy sound we could have a voice recording narrating what had just happened, as well as adding some in other areas like trap usage.

If I were to persoanlly recomend such talent...well....

http://www.waynejune.com/demos.html