What if Riftwalk's range scaled with ability rank?

http://boards.na.leagueoflegends.com/en/c/gameplay-balance/BaE1gNm8-if-i-were-you-some-changes-id-like-to-see-pls-reply-3

I've many thoughts about Kassadin as well

i have a better idea that i tought since the ulti nerf he progressly gains range as he ulti

personally I think his ultimate is what kinda makes him really hard to buff.

My idea is to either give him a new ultimate or have his ultimate Charge up to 2 seconds and the longer you charge the more distance you travel.