If Universal is wise, Gringotts height requirement will be 42-44". Anything higher will be just another dumb move to push away families with younger kids.
My Potter knowledge is pretty much nonexistent, so pardon my ignorance; but is true that some of the popular shops Universal built into Hogsmeade at IOA are actually supposed to be in Diagon Alley? If so, how is that going to affect some this new area, if at all?