It boggles my mind why Rance 8 went back to evenicle style dungeon crawling. Rance 7 is so fun I legitimately think it's better than most AAA games, even without the H content. I would kill for a good, modern clone of that with a new story and setting.
Well, they were pretty (crazyly) creative to literally do a different gameplay for each game, Kichikuou Rance was meant to conclude the series as a strategy game after only dungeon crawlers but the next games went back to that anyway. By the way, it was Evenicle that used Rance (Magnum) Quest as a base, it was released four years earlier. But like a friend of mine uses to say, "Rance is a good game with hentai, not a good hentai with gameplay, which is very different".