Can Sona get a buff?
Like just fix something about her early game. Don't care if it's giving her mobility so that it's harder to catch her but she is still squishy if you do. Giving her durability, she is still slow but at least now "chip" damage isn't chunking her down. Giving her a hard CC outside of her ultimate, she can be slow she can be squishy but at least she has a way to protect herself and her ally that doesn't require her to wait till level 6 to be useful. Give her abilities MUCH lower costs and cooldowns, if she is going to be a spam champion late game why make her wait so long to get there? Give her abilities higher base numbers, it would be nice if i didn't need 2 late game AP items to do more then throw a fist full of feathers at the enemy or put a band-aid on a gaping wound.
Mix and match some of these. Maybe Sona gets mobility on top of lower base cooldowns and lower base mana costs. She doesn't hit hard, but she hits often which puts pressure on the enemy. Maybe Sona gets the ability to take a hit and she can stun before level 6, Sona still can't do much damage or keep her ally up... but she can sure set up kills.
then
then
then
and see what she can do