Yh that'd be super dope~!
The fight seems to focus on Queen being Sanji's main match up and King being Zoro's so Oda could still technically keep this set up till the end of the fight ^^. The center of the stage itself is where the showdown is happening with errone watching on so I can't really see him separating them but even if he doesn't, we will still technically be getting Sanji v Queen and Zoro v King at the core of it ^^.
Pretty creative choice from Oda though and has the potentially to be a lot more interesting than a typical 1 v 1