Improved generation to increase level variability

*This suggestion contains spoilers for the names of secret levels

In Minecraft Dungeons, some of the levels are lacking any randomly generated secrets, as far as I can tell. Levels like Creepy Crypt, Pumpkin Pastures, and Fiery Forge have some of the best generation because there are so many randomly appearing secrets that you can stumble across. Other levels, such as Cacti Canyon, Desert Temple, and Redstone Mines, are completely lacking in secret content. Cacti Canyon has one secret chest that occasionally spawns, desert temple has two chests that always spawn, and redstone mines has no secrets at all. (Note I'm not counting runes as secrets in this case). 

Full list of levels that are lacking any randomized secret content, or have very very little:

Redstone Mines, Cacti Canyon, Desert Temple, Highblock Halls, Underhalls, Arch Haven, ???

Levels that are alright, but could use a little more touching up:

Creeper Woods, Soggy Swamp, Obsidian Pinnacle

Perfection:

Creepy Crypt, Pumpkin Pastures, Fiery Forge

*Soggy Cave is not included in any of the lists because it's not meant to be randomly generated

My suggestion is to increase the amount of random secret events in all of the levels that need it. This would improve the replay-ability of the game as a whole.