Had these ideas bouncing around in my head.
I have thought about the mechanic of unlocking teleporter. I know that unlocking teleporter gives teleporter for future runs, but aren't we technically helping the pizza travel the kingdom to rescue people? So my thought is that unlocking teleporter should increase the pizza girl's presence on the map, increasing the chance of a health drop becoming a pizza by 4% per a teleporter, effective immediately. It would also give players who plan on completing the thread in one attempt a reason to get teleporter.
Thought about "institute of gastronomy" manor upgrade. I think it would be cool if it also increased the int scaling of heals from the Chef's talent and trees as well. The tree's heal goes from being something big to just being a glorified health drop that is guaranteed in a room. Chef's talent seems like the character essentially cooks a health drop and heals for the same amount as a health drop until 1 point is put into "institute of gastronomy".
I don't know if fairy chests give more red aether if they don't have a rune, but they feel insignificant on higher NG+. Most aether comes from clearing the bosses, and converting 0re into Aether at the soul shop. It would be cool if fairy chests either gave more Aether or increased character damage/health if they do not give a rune.