Ideas for some wonders. Right now it seems wonders are a little lacking.
I'd like to see a shrine of the Champion type wonder, that gives all units a start at lvl 2. Maybe if a high-lvl adventurer dies it can be built.
Maybe there can be wonders that gain prestige, that could be started by doing quests up the adventuring line. (another way to power that up)
One bizarre idea: upgrade lost libraries via artifact. Would be a case where you spend the material, but you get a random result?