Kog'maw update that could help

Kog'maw has had some changes in his time, but when he had his W give him more attack speed and attack speed cap; he was threatening. But in patch 6.19, they put the attack speed buff back on his Q from his W (which his Q even still is a bit bad). Kog'maw relies on his W to do more damage, and his E and R to help secure his kills. His Q cant be used in team fight all that well because it hits a single target. We cant have a champion excluding an ability, because every ability counts. I could see changes to his Q, like it having AOE protection shred, or percentage DOT damage; and his W getting it's attack speed buff back in exchange for the true extra damage. These changes can still make Kog'maw good and special in the way he always was and can be. I'd like to see some consideration from any of these idea's. I thank those who do dearly.