For 50th anniversary, there are some things i'd love to see.
For one, the trains getting a repaint with possible re-names to simon kenton (19, green) and tecumseh (12, blue) but the rename might not be possible because of 12 (blue's) original name.
Name overlays for one year. Woodstock express becoming scooby doo, beastie, or fairly odd coaster, Bat becoming flight deck or top gun.
Coney Mall overhaul. New bricks, building repaints, small new restaurant maybe? I'd love to see a KI Museum with maybe old ads, Days of Thunder footage, ride signage, and vehicles like Son of Beast, King Cobra, Firehawk's sign, etc.... . In that overhaul as well, i'd love to see a small ferris wheel added.
I'd love to see a 50th anniversary parade with something similar to CP's 150th parade with a show ending at the stage in front of Eiffel Tower.
Definitely old walk around characters maybe like hanna barbera, laura croft, etc.
A behind the scenes tour of the park with a lift walk on something like Orion or beast, then your able to see how the ride is prepared for the day, and maybe first ride of the day. then you can meet the people that keep the trains going on the KI&MVRR.