1) A bustable block that simulates glass
With glass debris and sound of a glass breaking.
See also:
http://mb.srb2.org/showthread.php?p=707761#post707761
2) Boss "teleport" effect as alternative to the "Fly-away boss"
Today, a boss flies away when he is defeated by the player. I'd like to set a flag (Object Special?) which gives the boss a "fake teleport": after the player has defeated the boss, he starts to blink and disappears from player's sight.
3) New state "Gridding/Slipping"
(I don't know if it'll fit well, I'm just dropping some of my crazy ideas)
4) "Vehicle" Objects
Vehicle objects can be any object that follows or carry the player. While the player is using such object, this object can force the player into certain state and/or lock the player's movements. This object can "clip" player's sprite (or place it behind) to simulate that the player is inside vehicle object (e.g. mine cart).
Examples of vehicle object: mine cart (S2), snowboard (S3&K), spinning top (S3&K), air-glide, ERZ3's missiles.
5) Circular Zoom-Tube/Curve axis for Zoom-tube
Currently, if I want to create a curved zoom-tube, I have to do place tons of ZT waypoints, But the movement isn't smooth and the camera shakes a lot. It would be like something similar to the Nights Axis, but with a rear view and spinning animation. By checking a thing flag, the waypoint is "converted" into an arc axis for zoom tube.