Let Skarner move his crystals with his ult.

As an avid Skarner fan, I'm currently rather pessimistic about his upcoming changes on the PBE as they look like a net nerf, however...

I did think of something that could perhaps make it a little better which is instead of his crystals just being in these six designated spots, what if they made it so once you have your ultimate, you can use it on these crystals to move them to new positions (Maybe you could reactivate his R to let go of it or have it so it lasts twice as long as it does when he ults an enemy) and have a 10 second cooldown before you could use it on that crystal again (With the enemy cooldown being separate from the crystal cooldown).

This way you could actually set up your crystals ahead of time and plan strategies around them, maybe you drag one into a lane bush so when you gank it you'll get the boost, or maybe have a line of them down mid lane for any big roaming teamfights.

http://i.imgur.com/OAyeLHx.png If you want an example of this kind of mechanic then look up Earth Spirit from Dota 2. http://dota2.gamepedia.com/Earth_Spirit