Simply enough, in order to make something "Re-appear" we have to program collision, raycasting, and rendering. The point of this add-on is so we can do all three for just a small time, which is impossible currently.
Example of how this add-on would work:
On brick with the whole deal turned off, I.E. Collison, raycasting, rendering
On the re-appear, they would all turn on, for whatever time you set, then they would once again turn off the whole deal, making it Disappeared.
This could be used for many things. A good example is it could be used for sealing an entrance. You can make a hole then place a brick in front of it, then if someone collides with the brick, the door would re-appear for 1 second, therefore, as long as you were on the button, the entrance would be sealed, and you'd have to go in another way, I.E. A Hoverboard.
