this seasons EFL maps have an antispawn killing system that works really well
Grab one of these seasons maps and de pbo to look how it works.
Addaction hit on the victim looks to see if he or the shooter are in a safezone trigger area,
if either is the victim or the shooter are, the victim is either repaired back to full health if only injured or immediately respawned (0.1 seconds delay) where he died with the weapons he died with
The shooter is put into a cutscene for 5 minutes as punishement after been killed
requires two trigger areas, no activation lines etc
a complicated respawn script and other supporting scripts
took 2 months to develop it
you can find the maps in the DL page at this website
http://www.euro-flashpoint-league.com/