I would....
1)Repaint Flight Deck to its original colors
2)Remove the brake tunnels on The Racer,so their is no place to put any gum
3)Reprogram,and retheme The Crypt
4)Take trims off FOF, well,all of the coasters trims for that matter
5)New movie in action theater
6)Just improve the theming,like the clock in Oktoberfest,and all those other little things7
7)Refurbish all the theming on any coaster their, like FOF and AE,and others
8)and,Make everything enviro-Friendly.Like plastic bottle recycling,and energy efficient light bulbs,bio-degradable plates forks cups Etc.