While the new Skarner passive is a little sketchy, let's looks at a different Skarner change...
Passive - Crystal Spires (Removed) Crystallizing Sting (moved thematically to E - Fracture)
E - Fracture: (Added) Enemies hit by Fracture are afflicted with Crystal Venom for 5 seconds, causing Skarner’s next basic attack against them to deal 25/50/75/100/125 additional physical damage and stun them for 1 second.
So... we're back to relying on a skill shot to be our only form of gap closing?
It may not seem like much since Skarner doesn't have to stack his passive anymore and it just immediately stuns someone, but I still don't like the idea of a skill-shot being the only way to catch someone as a champ without a gap closer. It feels too.... 
Thoughts, summoners?
and
Can solve this problem both offer more stick power.

or
can be a good options in the MR. Specially the new