But regarding the growth rate.
I can't remember if I've seen this somewhere before (maybe I played it a long time ago), or if it's just an idea that came to me.
Anyway, the idea is:
There are 5 artifacts in the game that provide a growth bonus (the Legion set), but since it's quite difficult to use them individually (calculating so that on the 7th day, a hero with the Legion artifact remains in the castle :smile35:), I suggest allowing the artifacts from the Legion set to be left in the castle. (I don't know how to implement this, but I'm sure it's not that difficult).
This would provide an additional growth bonus (albeit a small one), and the artifacts wouldn't just sit idle in the backpack. :)