Idea's For Kassadin?

Kassadin is a very fun champion to play, but is very difficult without too much reward. His kit makes him very difficult to balance properly, but I know there is a way to buff him without actually reworking him. Post your suggestions below on how we could make Kassadin a bit more balanced.

I have my own suggestion.

Increase the damage on his W and his E. But also increase the cooldowns for both. His Q is his early game poke and defense, and its really weak so its balanced, but his W is a melee that doesn't really do enough damage for the risk of having to get that close to his target. They could slightly change Kassadin's W to where if it strikes a champion, it deals 20% more damage and only replenishes 10% of mana, but also increases the cooldown by 30%. They could also change his E to scale more with his AP to add more damage, still deal out the slow and just increase the cooldown by about 4-5 seconds, this is fair and balanced because to activate his E, there must be 6 spell casts by either him or other's within his viscinity.

Do you like my proposal or do you have your own? Tell us below and hopefully Riot will take notice.