Why did Riot remove all of Soraka's independance?

I know she was reworked a LONG time ago, but im still wondering why they would turn an easy fun to play champ into a skill based champion, dependant on a carry.

The rework basically forced her into only being a support, making her w useless unless you're in lane with someone. The only time people play soraka anywhere other than support is if they build full ad and attack speed, which i find should be unnecessary for someone who claims to also be a mage, and even if you build full ap, youre still pretty useless.

I get she's one of the best healers in the game, but Riot really made her dependant on her carry, unless you build stuff that are completely off meta.

The old Soraka was able to heal herself in lane, which was good sustain, but had a higher cooldown which made her balanced, and her passive and Q were very usefull in lane to harrass and poke EASILY, without constantly being juked, like with new new skillshot Q. Her old Q was also great in teamfights to hit multiple targets.

All the changes made to soraka with the rework basically removed her capabilty of being a mage, and made her useless in the midlane, unless you build attack speed and AD.

Also, soraka's old E made her one of the most unique champions, giving back mana to allied champs, or using it offensively to silence the target.

People say the old Soraka was annoying, but this soraka can spam her W forever if she has health pots, and enemies must find that way more annoying than just simply granting mana and health on a long cooldown.

Personally, i really liked the old Soraka and I think Riot should consider bringing back her old perks