Those are some interesting observations in that giant wall.

It's true that screwing up a little would cause the whole run to be null and void especially for groups going for the speed run chest. I'm on summer vacation right now so i have plenty of time to go through these dungeons over and over now but later on when i go back to school i won't be so fortunate. However i guess that content will continue to be engaging for longer as a trade off... i guess i'm okay with that.

A rest area or ways to Add time to your clock would be a neato gameplay mechanic. Sometimes you need a breather. I personally do not like having the last chest be time based, as it does force us to map memorize instead of strategize. If There were some type of scoring system i think it would be better and more puzzles, battle puzzles to reward.

I am having a lot of fun with the dungeon though. As LNC, you really do learn more and more everytime you fight the bosses, getting better at doing the thing you do. the battles are flexible enough to try different things like Pug tank, THM kite and many other things. The only problem is to find the right people who are willing to try different things and suggestions.