That eventing system for maps is so confusing. So far all I've managed is simple moving doors/windows and simple two stop elevators. It's powerful, but complex.
Well, my event experience with BL really pays off. I ended up using a different strategy than valve's, I have the doors open when an autospawned cube enters a trigger at the end of the dropper.
I would post maps, but it would spoil the new GM gamemode im making...Hint: It will use blockhead ragdolls and playermodels.