2010: Hogsmeade
2014: Diagon
2019: Hogsmeade Coaster
2023/4: Ministry of Magic
Would be about a perfect timeline
To add to this a bit more, I don't think USF needs another Potter ride just now and if Fantastic Beasts will have a presence in the new park plus the new movies will feature different MoM, I think it allows for a few easter eggs and cameos.