Buffing Karma won't fix any of her core issues
The issue with Karma isn't her numbers, its her kit itself. Her abilities, whilst pretty, somewhat-balanced and somewhat fun to play, are not at their full potential and are downright boring in their current state, especially compared to her kit before the rework. Make her more of a yin/yang champ that balances the passive/aggression within to win battles like in her lore, NOT a champ that just gets extra damage on their abilities for casting mantra. Give her her fans back, no other champ had fans at it was unique. GIVE HER A PROPER RUNNING ANIMATION AND A ANIMATION FOR HER E CAST. She literally has no animation for her E and it's just lazy. Give her a better passive. Her current one doesn't have much impact and could be so much more.
Edit: I'm not saying she isn't fun or balanced right now. I really enjoy playing Karma, I just think that she has a lot more that could be done to her.