Just to throw some ideas out there:
Climbing wall (The rock climbing kind)
Foam pits are always fun 
Vault blocks
Balance beams
High bar/low bar beam thingy
Some exercise equipment? Barbells dumbbells etc...
Ropes to climb up

We will have a foam pit, if not when we open, then soon after. The goal is to outfit the pit with a high bar, "urban diving" platforms, and a runway from the spring floor.
We will have plenty of vaults, exercise equipment (there will be a small CrossFit program), and ropes as well.
Not sure about a rock wall yet. We want to have something but I'm not sure how extensive its going to be right away. But we will have plenty of rings, pull up bars, campus boards, dyno grips, etc.