@Riot - Context on Kassadin's Antiquated E

I've been playing Kassadin for about the past 3 seasons now and I believe that although he was mostly ignored during the assassin class update, a small quality of life buff will do a lot to put him in a decent spot. The buff that I'm asking to be considered is the removal of the requirement for 6 spells to be cast around Kassadin before he is able to use his E ability. To compensate for this, his E cooldown could be increased from 6 seconds at all ranks to maybe 10/9/8/7/6 seconds per rank.

While I understand that Kassadin's theme is "anti-mage", I believe that it's unfair to have a spell gated by not only a mana cost and timed cooldown, but also a minimum number of spells cast requirement as well. It makes Kassadin's laning phase much more poor than it should be, but I believe that implementing this suggested quality of life buff would go a long way. Any Rioter thoughts would be greatly appreciated.