I would add aliens into minecraft ( even though there is a mod for it ) so it will give a nice experience to all those sci-fi fans out there like me! The aliens would be coming from UFOs but are friendly. If you kill one they should drop the following:

.blaster ( a bit common )

.gravity boots ( rare )

.blaster energy clips/ammounition ( very common )

.power/health drainer ( common )

And if you manage to destroy a UFO it will drop as an item,and then right click with it on the ground and right click again to ride it. There will be 2 buttons:

1. Travel in atmosphere

2. Travel in outer space

This is a very good idea if I may say so.

-dtkylego