How is Orianna still untouched?

Orianna has been a staple in both solo queue and competitive play for an incredibly long time. No matter how much the meta shifts, Orianna always manages to stay untouched and relevant. Despite this, she has WAY too much going for her. She has low mana costs, spammable spells that are easy to manage the mana on, a self-speed up and enemy slow, constant empowered autos, and a self shield that scales with her AP, which she naturally builds anyways. She can sustain herself with her E and doesn't even have to use spells to hurt you because of her passive. Even if she did use spells, her Q range to move The Ball is about as long as, if not longer than, most spells or auto attacks. Of course she has her weaknesses, but those weaknesses are not crippling enough to balance out how powerful she is as a solo laner and as a teamfighter. None of her abilities or strengths are overpowered in and of themselves, it's the combination of them that makes Orianna too powerful. If she's a strong teamfighter, she can't be a strong solo laner. That isn't how balance works. If she's powerful late game, she can't be powerful early game. Just the presence of The Ball is enough to stave off most laners from being able to farm, since she can just harrass with her Q, W, and autos and E herself to give a shield and armor/mr. Some possible fixes could be:

-Reduce her Q range -Increase Q mana cost early -Remove the slow from her W -Remove the armor/mr buff from her E -Lower her passive auto damage or change the passive all together

A champion that is always that consistent should always require being looked at. Every champion needs to fit a certain role, and being able to be picked into every composition regardless of rank shouldn't be considered fair. Orianna has far too much going for her and needs some changes before she is fully in line with the other mages in the game.