And we still haven't got a follow up to Mordo and "Too Many Sorcerors".

The only unresolved post credits scene from the Infinity Saga.

* And yes I know Mordo was supposed to be killed by Wanda in Multiverse of Madness, but it was cut so he's still alive in canon.

** And yes the MCU hasn't followed up on Scorpion & Vulture prison conversation from Spider-Man Homecoming. But Vulture got sent to the Morbiverse and Scorpion was in Brand New Day, so it's resolved enough.