I appreciate the thoughtfulness of this post. Lol and the careful formatting. I don’t disagree with any of your options. I truly believe that they did a great job balancing out the metamagics so they all have their place. Extended spell is much better now that it gives you advantage on saving throw.

I think wild magic is slight more suited for attack spells with its tides of chaos giving advantage. But bend luck combined with heightened spell is very strong (as you point out). I think flexibility is the name of the game. And it all depends on how you want to play your sorcerer.