Aurelion Sol

I have picked up this champion and i really enjoy him but hes just... so bad against almost every champ. I honestly think hes fine early with mana but he cant really kill anyone ever since his dmg just isn't up to par, i mean its possible but he is more of a sustained dmg but he cant do that right half the time. I think some good buffs would be the ability to double q and slightly bigger stars. With a double q he could properly kite like a sustain mage should and with the bigger stars they'd be easier to hit as for me currently the feel kinda small and clunky. Although with that being said the size still isn't to bad but the speed of the stars I feel should for sure be buffed slightly. Anyone else have some thoughts on buffing Aurelion Or changes to Make him Viable?