I don't know that you waste I-Drive fronting real estate on office space or parking. Even with the slightly run-down surroundings--easily fixed, btw, just go south 10 blocks to see an example of how--it's still I-freakin'-Drive. A tourist mecca with tons of daily passers-by.
Even though they've allowed Wet n Wild to go to ****, never lose sight of the fact that water park lasted almost 40 years. And it still draws a crowd on hot days. There is plenty of money to be made from that location. Move the offices up Turkey Lake or to Metro West.