Mob XP Farm Multi-Destination!!

Hello, I would like to display my newest creation! It is a Mob xp farm, BUT BETTER! It mainly is useful in mutiplayer, where you have the ability to buy or donate for mob spawners. This design can use at the least 5 spawners, as it has 5 main towers for spawning. Each tower will have a different type of mob, and is hooked up to a shaft into the air that goes through a toggleable switch between two seperate rooms. This works by having one main room that controls 5 different towers, so you can either send zombies from one tower to the central room or from that tower to a different room. This allows you to select what items you get or send mobs to different rooms, so multiple people can use it! I plan on creating light displays to distinguish where a type of mob is going in the central room, otherwise it is just being started. At this point in time I currently have on switch completed, and am working on the other 4. Thanks!