Skarner passive rework?

I love Skarner and I've been playing him a lot lately, and I've noticed that while I can play him to a reasonable degree of success in the jungle or as a support, it is nigh impossible to play him top. His Q deals lovely damage and has its cooldown reduced by auto attacks. That's wonderful. His shield is a bit small, but the movement speed boost is very pleasant and works well to close gaps. His E slows and then lets you stun them, going very well with approach velocity, and his ult is exceptional, for obvious reasons. But his passive, outside of the jungle, does not exist. People keep proposing large reworks to Skarner, but all I want for my boy is a new passive. Maybe even just put crystals in the lanes and keep his current passive. If this makes him good and I won't be able to play him every game that's fine I'm just tired of only being able to play him in the jungle when he's so versatile in every other department besides his passive.

TLDR I love Skarner's kit but his passive sucks and he's confined to jungle.