Solutions to make dungeons slower and/or longer.

[Byonka]

Turn off Run - Walk it out. :P (If something is said, feign a leg injury!)

[ThirdChild_ZKI]

Rather than "longer", I'd like to see more interesting, situational mechanics, like the Baalzephon/Magestone mechanic in Lost City (actually, I saw something similar for Tam Tara HM), or the Astral Realignment/Gloam buffs you need in CT/Halatali HM. Basically, adding interesting mechanics that don't amount to just rounding up mobs en masse to burn them down would be an effective answer to speedrunning.

Sure people will always find a faster way or a possible loophole, but if the dungeon is more than just an enemy gauntlet, people will have to slow down to do things properly.