I'm really loving this script. It works really smoothly from what I've seen so far while playing. For other map creators I highly suggest using--as stated in the OP; a lot of spawns and such. It really makes the game a lot more dynamic feeling because you can expect a lot more spawning to take place. This keeps players moving throughout the map.
I'm currently working on a Zombie map called "Outbreak" and it's going to use up as much of San Andreas as I can, and that my server and computer can handle. All over the map will have random pickups, and derelict vehicles on roads and in strategic places. So far it's going well and we'll see where this project goes. If it's sturdy and works great in multiplayer I'll definitely release it.
My only complaint about this mod is that the there needs to be more skins, but I know that will be worked out as more people contribute to this resource. KEep it going though, I really like this.