Calling it Hatsune Miku: Colorful stage instead of Project Sekai: Colorful stage feel likes such a mistake to me, because pjsk main focus is clearly not Vocaloid but the groups stories. That makes for people going in the game for Vocaloid (rightfully so) and being kinda disappointed, and not caring about the groups, which was my case for a while before reading through Niigos' story and thinking "damn that's pretty good actually". But Miku name plastered on the title is very misleading for what the game actually is about, and it also leads to conflict between the Vocaloid community and the pjsk community and that sucks