Phase four needs
Something at least on Baja everyone does 1-3 then ghost town in dungeon calling out how much longer for dungeon to end. I found the spawn to spread out and thin to make potions worth it. I'd suggest either A. Shorten length 2 hours would be fine or B. Turn the spawn up
Comments
I think the solution would be to have one side of dungeon (or the "deeper" you go) spawn more densely with the other parts being less dense for the more casual/noob players.