I have been summoned!
But seriously, I think themed spell lists can go a long way. I also like the Tasha's option to be able to switch out one known spell for a different one once per long rest, allowing you to really tune in your spell selection without feeling penalized for taking a spell that doesn't quite work in the way you'd like.
I also agree that sorcery points are... less than ideal. Compared to a Wizard, it has the exact same spell slot creation power as a wizard's arcane recovery. Sure, it's more flexible in that you can create the spell slots as needed whereas the Wizard has to wait for a long rest, but it ALSO fuels metamagic on top of that. But I don't know how to really fix that.
One thing I think could be interesting regarding metamagic would be to have a certain number of metamagic slots, and you prepare which metamagic you have access to for the day. That give the sorcerer some more flexibility, and as you level you can get more slots to have more metamagic options available.