and people who don't play in the pre planned explore permas. It is somewhat silly that there are parts of hell left untouched because everyone is still using the playbook of the immortal only group that went through way back in the day.

That said unless they toned down some of the mobs it would not be realistic to see a group of players willing to spend the time to get deep into hell and then die trying new things and repeat until they figure out new things, at least not without being a pre planned and very comitted perma.