Why the fuck does Vel'Koz get to start with 2 stacks

Karma can shield minions while Lulu and Lee Sin can't anymore. Soraka can heal minions. Nidalee can't. These are all very important because it means that they can preserve a wave much more easily with the presence of a cannon minion, especially with high CDR. This isn't minor. This can literally turn a 8 minion wave with no cannon minion into a 14 minion wave WITH a cannon minion. That will decimate a turret.

Janna can shield turrets. No one else can. It really makes no sense why she is the only one able to shield turrets. You can call it her niche, but it's about as much of a niche as Karma being the only one who can shield minions.

There are also PLENTY of onhit aa modifier spells that: Reset the timer but are not consumed (Morde Q) Reset the time and affect towers as if they were a normal unit (Nasus Q)

And let's not get started with the number of spells that don't proc spell effects, proc both spell and onhit effects, and the autoattack modifiers that proc spell effects.

Poppy's Q deals 100% magic damage, procs SpV, and can crit. Let that roll around in your head for a moment.

This game is plagued with very powerful but very unnoticeable inconsistencies. It is much more important to know whether Jax's R heals him through spell vamp or not than to make sure every single ammo user starts with 1 ammo, not because they need it to function or be balanced, but because of an arbitrary rule.

To hell with balance, everyone much function exactly the same!