Lab Infrastructure

What do we want the lab itself to look like? What should its capabilities be in terms of supporting different types of experiments in terms of equipment, space, etc? What should we be spending money on? What proportion of the space should be devoted to lab and how much to other functions like talks and classes? What looked like a large space when it was empty is now pretty crowded looking so I'm trying to gather opinions on how to make the space as functional as possible.