Although it's been weeks since E3 ended, a new interview with director Tetsuya Nomura from the event was posted in IGN Brasil.
When asked on who his favorite character is, Nomura says:
On dark themes in 'Kingdom Hearts III', Nomura states:
On world selection, Nomura says:
Nomura also reveals a surprising fact regarding world selection, stating that 'Mary Poppins' was actually being considered as a potential world over the years, but he was never able to figure out how to include it in a KH game. Regarding this, Nomura says:
And when asked about the popularity of 'Kingdom Hearts' in Brazil, Nomura replies:
IGN Brasil Interview w/ Tetsuya Nomura