I'm done with my new world! Many of you have watched it being built as I went on to test the world (and procrastinate from making it), and thanks for all the suggestions. It features: around 11 floors (most for specific purposes, including cano king, laser tag, racing, and more), handy-dandy, non-patented chutes that let you fall down to any level under you (sorry, no elevators), a giant dogfighting arena complete with random platforms and a floating cube), and one intended "secret" (and a few non-intended). Have fun and read more for info! MORE INFO AND PICTURES WILL BE ADDED LATER!
Link: http://www.geiodo.com/worlds/tower_kf.utw
Floor-list
1st: Ground, blank
2nd: Laser Tag
3rd: Laser Tag
4th: Racing
5th: Blank
6th: Maze (These seem to be a signiture of my worlds...)
7th: Sniping
8th: Blank
9th: Giant, 120 alt high, kind-of blank floor with random platform tower
10th: 80 alt high cano-king floor (you fall back down to the 9th if pushed off)
11th: Blank
Hint: When looking for the secret, measuring is the key. Then, take flight and use your skills to find this secret.
On Chutes:
Chutes can be used to quickly get to the floor you want. Unfortunately, I can't make working elevators in Flyclub's World Creator. :/ The first chute on your left goes to the first floor, the second goes to the second, and so on.