It is a nice area, though in terms of aesthetic and atmosphere, Ferenia or Hanubia would be my pick.
Speaking of stages, if there is a game I want in Smash Bros. just for the stage potential alone, it's Hollow Knight. It is such a gorgeous game and it has so many unique areas. Sure, it'd be likely they'd choose the beginning area, the Forgotten Crossroads, but it's still pretty unique(especially in the latter half of the game) and there are so many amazing areas to choose from. Greenpath, Fungal Valley, the City of Tears, Crystal Peaks, the Deepnest, Kingdom's Edge, so many beautiful and unique areas.