Having done both of FF14's deep dungeons Palace of the Dead and Heaven-on-High, as well as WoW's first (And currently only) deep dungeon Torghast, there are some things I would do differently. First, no more invisible traps. PotD and HoH have invisible traps such as mines that take off like 4/5 of your health, and the traps are completely invisible unless you use a pomander of sight. In Torghast on the other hand, all traps are either clearly visible, or have some sort of indicator that careful players can watch for. For example, giant hidden swinging axes will always have a gouge mark in the floor that you can look out for. Another thing I like about Torghast is it will scale for the number of players in your group, so if you go in solo, it will be properly scaled for 1 player.