wow that sounds like pacman where the ghost had a spawn place you cant go in that little box and had to wait until the ghost came out...
hmmm maybe try this.... around the area you dont want anybody going in try using your hurt zone located in the marker tab, that way they can not enter Ive not used a hurt zone as of yet so not sure if you need several tiles to acomplish this...
And as far as your character re-spawning place your character and then once placed then right click the character on the map then goto the respawn area of your coding and make your changes as you see fit...
And to make the characters come out just use waypoints...
Hopefully someone else has a better idea this was just off the fly and Ive not done this before so ill keep an eye on the thread maybe we both can learn something...
Have you downloaded your CLiPs today.