What is the area going to be used for?
For example, my bio at work has a huge whiteboard, with screws for holding up clipboards underneath - it's sole purpose is holding job sheets and showing what is in each room for the week, and who is working them. Not that useful in a theatre, but one of the most useful features of our booth for what the venue is used for.
We also have a bench along the front of the bio with gaps for followspots, with patch points along the back which link to patch bays, special lighting rails along the roof, which allow you to clip in a light at any location, racks for cables, a separate office etc. Your best bet is to visit a few venues and ask to see their facilities so that you can see what works and what doesn't.