Instead of the boring old framework behind the backboard, how bout a giant KATPAK head. Imagine staring into that when shooting a pressure free throw. Especially if its belching flames or smoke.
In that tip-off circle at midcourt have a sign similar to the ones behind outfield walls in baseball "Hit it here, win a car!" Hit a shot from there and win something (a KATPAK maybe?)
Replaceable panels in the floor between midcourt and the 3 pt line that have "ku sucks", "nu sucks", "ou sucks", etc.
Make it memorable like Boise St. football. All Purple with white stripes and black lanes.