It'd be weird for Wutai not to have more prominence in the upcoming games considering how part 1 consistently brings it up.
It was a fun side story, gave a little more depth to her as a character and provided an interesting challenge with not having your materia on hand.Hopefully this also brings a better story arc for Yuffie, as she had the smallest in the game aside from Cait Sith (which arguably could be associated with Reeve but I digress)
Vincent's the one I really want to have a bit more spotlight. Sure he had the more interesting flashback moments but there was no actual active content involving him.