User blog comment:Grrrbear26/Fixing Skarner/@comment-24420226-20150531104625

Having these localized nodes of power on a jungler is somewhat counter-intuitive. A jungler should be able to roam the map and create pressure where his team needs it, not wherever he happens to place his nests. It makes it incredibly easy for an enemy team to maneuver around him by simply not going where his nests are if he is ahead. If Skarner is behind, they can likely bully him away from his nests and destroy them. The tunnels on Rek'Sai work because they simply expand her options for movement when moving towards her next target, not pressuring her into making a play around that spot specifically.