Boy I got got bored of Aurelion Sol pretty quick...

Was super fun for the first week i had him but it got old fast.

After a while the lack of depth in his kit really start to show, his passive is dope but only when W is active, so they're basically one ability combined, and his Q is dope when it gets big but boring when not, His E is nice but long ass CD early and usually maxed last, and usually used in combination with his Q, so again they are almost like one ability combined.

Then there is his ult which was pretty fun/unique with the long range big and long slow, with knockback for closer ranged targets, but the slow got a big nerf and now it's just a boring skillshot.

Conclusion, Sol is balanced if not rather strong, but lacks the depth to keep players interested.

I guess this is a response to people asking why Sol isn't played much(inb4, hes not hard, hes actually pretty easy to play).

P.s. If I had to pick a mechanical reason, It would be his weakness to melee assassins/fighters which are very plentiful.