We don't even need massively variety, random path sprawling dungeons to make them interesting. The dungeon design has gone downhill in general from actual imaginative ideas to A to B corridors disguised with pretty visuals. Remember haukke manor where you had to collect the keys? Remember wanderers palace which was a mini stealth mission to get past tonberries? Even if we had a dungeon like LotA where you could choose the order that you beat the bosses it would make for a far more interesting dungeon design without impacting formula