I don't even want to begin to delve into the problems created by a mod team leader whose primary focus is creating the storyline for the mod, but let me just say that it's not an environment I'd ever want to work under. You run into issues with feasibility of the work involved vs desired output from the writer who has his own vision, yet can only put that vision down on paper. It takes a mapper with experience to sort out problems like this, and if you've never tried working on any projects or even attempted to create a mod on your own before you probably can't understand this.
Reading through your plot summaries, I'd like to see you try to implement some of these things you mention in an effective way. For instance, following the sounds of voices through tunnels is a really great idea, but a technical nightmare depending on how you go about it. It's stuff like this, and the creation of plot elements which you yourself have no capability to produce that makes me think you're getting in a little over your head. Your style of writing bears a stark resemblance to my own back when I had little understanding of the process involved in translating my active imagination into playable maps.
Words are so much easier to create than maps, it's scary.