On why current dungeons and what can be done to improve them

[Legion88]

Nice essay. Congratulation.

I wont destroy your suggestion but i hope i can expand your ideas of inovating dungeons and improving the playerbase.

How to innovate dungeon design in current conditions

Separate the casual low level difficulty dungeons from the mid/high level difficulty dungeons. So you can make a separate roulette in the future for the new mid/high level difficulty dungeons. The new dungeons can give more tomstones or better and/or more gear drops as their counterparts of the "expert" dungeons but they are a lot more difficult to beat cause of mechanics (dungeon mechanics, boss mechanics, trash mechanics) or time needed for the clear (no ways of speedruns cause of hard gating or other hard punishing mechanics).
Every player can choose to grind the "expert" dungeons or the new type of dungeons. In the case of whining just l2p or git gud. Maybe introduce some dungeons for full parties.
There are some other models for duties in other games like the "Ancient Cave" in Lufia II, just for premades but you could include gathering and crafting to progress in there.
Perhaps there could be a huge dungeon, a real dungeon. Entrance = exit. 3 out of 10 possible bosses are spawned, two ore more can be spawned by dungeon mechanics or quest you can accept at the entrance. Quest in the dungeon you can accept in there and only can be completed within the run. Every boss and quest could give rewards like tomestones, good up to date gear.

Improving the playerbase

This is the primal point of the problems in duties.
But there is no way around a parsing tool to improve the players with the handling of there jobs. Some just don't know how good they perform so everyone should have his own parsing tool automaticaly adjusting to the job. But you will always find people who feels insulted by that.