Thank you for the ideas, i might really start to work on that from time to time.

I was thinking in having the faeries follow the player so as new weapons and armor are found the faeries may give different random options at the start of each run. Also have the player earn something like mana crystals instead of money so the upgrades would be done by the faeries magic.

I really like the idea of having different kinds of kids, it reminds me of rogue legacy, but i like more to have then with a more generic base so as the runs goes the game becomes more and more tailored to the player and his play style.

Having the faeries loot the body of the dead kids would be a great way to have the player recover a portion of the loot from each run, i could totally add a animation for this everytime the player dies.

As for the dead pyramid it could work as a window at the starting area where the corpses would be disposed, so after a couple of runs you would notice the pile getting bigger and bigger until it covers the entiry window.