Just Spawners

If vanilla minecraft allowed obtaining spawners using silk touch this is how I think it would be implemented. No crazy inventory GUIs, no commands, just spawners.

To obtain a spawner break it with a silk touch tool.

It will drop a mob spawner and mob egg.

Then find a place you want to move it to. And place it down.

Then use the mob egg to set the spawner type by right clicking. (Just like in creative mode)

It's that simple.

Features:

• Can use any spawn egg. Even ones created with commands, some may not work as expected.;)
• Remove the egg by right clicking it.
  
• Eggs can only be used in spawners. (Config option)
• Just spawners