We all have to remember the dome is simply a shell. Over time it can be gutted, a new soft roof can be added along with an upper level. I have heard that the foundation would not be able to support a hard retractable roof but i have also heard that it could support another level. Long term a new level could be added that would provide anything from additional seating to concessions.
i did not work on the dome when they first built it,but i have worked there after it was up and running.
i was told that the footings are already in place in case they wanted to expand up and out.
but an exterminator may be the first thing needed,when you turn on the lights...