VARUS REWORK

I recently herd that Riot is going to rework . I have been playing non stop and already got to mastery 5 with him. The only thing that needs work is his W and I have a great idea for it. The ap damage you get from it is next to nothing and building a rageblade to get more out of it is not even noticeable. An idea I had was to change his w to do % damage to health and the more minions he kills he builds stacks that he can activate for an attack speed boost. Changing that would mean that his passive would stack with his W. and any champion close to 2.5 attack speed when they are only lvl 5 would be ridiculous so his new passive could be when an enemy is marked by one of 's abilities or auto attack he gets increased range on that target. His ult to me is fine but like riot when you rework a champ you gotta make them OP. An idea for his ult can be that when you ult and it snares the first person and corrupts the ground beneath the snared target dealing AOE damage like a burn. It doesn't even have to be a regular circle, a large clock wise swirl or a seven point star around the marked target would be pretty cool. I feel like these changes would be fair and increase his over all damage. Feel free to post your own input agreeing or disagreeing with me. :]