Ugh. No. I want ability scores to matter less, not more. As it stands, 5e actively makes you want to max your primary ability score to 20 ASAP for maximum effectiveness. While making attunement tied to con and or cha sounds like you are forcing hard choices, all you are doing is rewarding classes who already are going to max those scores (sorcerer and paladin) while punishing everyone else who is more concerned with their primary scores that aren't Charisma. (Con is already important due to HP).
I was upset that 5e was angling away from "get to 20 ASAP" for classes and then doubled down on it in 5.24.
It would be something that you do not add-on top of fif edition..
Attaching Attunement slots to Constitution or charisma, or both would be part of the calculus and design of all classes from the start. When you redo the entire game.
Like, I want theorized, creating a simple RPG where you got attument slots based on your charisma. But charisma based classes would get bonuses based on how many slots they have unused. So it would kind of be like casters in shadowerun, where magic items messes up your casters.
Then, you could do funky things like have. A monk have their slots based on their wisdom. But get magical bonuses based on how many slots they have unused. So a "naked" monk would be like a dragon ball character with all kinds of mystical natural abilities but a magic item using monk be like a magic ninja.
I dont mind getting to 20 ASAP. My issue was everything else was ignored besides being nonnegative.

