
Originally Posted by
MisChief
The reserved spaces are for heroes that will drop into battle as ones in form die, during battle, so they would need to be equipped, is my best guess at this point. You don't have time to stop and change things. I can only assume they are besides the 9= 5 in form, 4 in Inn. The ones in Inn might be Calvin for banish, for example, you can switch him out twice a day, or some for HR, some for labyrinth, etc.
Oh, and the slots open by level/power/ or which heroes you kill. Something determines, that. So lower level accts can't open them yet.