Director says Kingdom Hearts IV will finally realize an idea they've been trying to implement since Kingdom Hearts III

I can't write this synthesis - the excerpts provided don't contain sufficient factual information to work with.

The first excerpt is speculation ("I've already convinced myself"), not a statement of fact about the game. The second is only a headline fragment. Neither excerpt includes actual quotes from the director, confirmed details about Kingdom Hearts IV's development, what specific idea has been in development since Kingdom Hearts III, or reporting on what either outlet actually covered.

To write an accurate synthesis, I'd need excerpts containing:

- Direct quotes from the director about the new mechanic or feature

- Context about what this idea is and why it was delayed

- Details from the original reporting by GamesRadar+ and GoNintendo

Could you provide the full source excerpts?