That's a big door. You need to figure out what you want to do about lighting in the door area. If you put your lights above the door track, then when it is open, the door will block the light. I have seen guys attach the door tracks all the way up as far as they will go, then they put a couple of 8' flourescents crosswise hung from the track brackets. You only gotta make a custom opener link to keep it tucked up high so you can keep the lights high. Other option is a side mounted opener that spins the cable pulleys (commercial style).
I use quad outlet boxes everywhere. It's dirt cheap to add them on the front end. At my factory, we ran quad boxes, and had each duplex outlet on a different circuit (not each outlet in the shop, but in one quad box, we had one pair on A and one pair on B).
I like copper for air lines. It's WAY more durable than plastic if you plan to run 150psi, and just as fast and easy to join (iron is a pain with all the cutting and threading).
Add two floor drains. If you don't want to slope the floor much towards the drains, then make the floor flat, but the drains are a lifesaver.
Run water to both ends of the bldg. Not just where the bath is.
At least two strong overhead lifting points where you can attach a hoist. Gotta engineer that in now, not later.
Then all I can think to add would be
gas-fired pizza oven.
dance floor with big pole to the ceiling.