Besides the stuff I have listed here, what other types of tiles should be included in a good, complete tileset?

"Normal" sprite scenery (both floating and grounded)
Unmasked sprite scenery
Layered Background & Foreground scenery
Vines
Hurt
Float Up
Warp
Directional, Info, & Exit signs
Destruct/Full Speed/Stomp blocks
Sucker tubes
One Way scenery