I would like to have 100 casual floors like in PotD again and an extra 100 difficult floors. But let us start the difficult floors without having to run the easier ones for hours beforehand.

The last two Deep Dungeons are not "deep" at all for the majority of players. Grinding the same 10 floors over and over is just boring. Of course the content is dead on arrival. Plus the conflict between people who want exp and people who want loot - which needs a solution. Extra exp gains from opening chests and finding hidden treasures maybe?

Having an solo achievment for the easier floors and another one for the harder ones would also add an extra activity for the more midcore playerbase.