I had read some ideas earlier about the blacksmith and such. I have an idea about the hero diaries. I had seen some questions about it earlier but can't find the post it was on.

My idea is....Maybe you could have to have so much hero experience gained until the diary is full. After that you could invest it to the library...makes sense to me....and as a reward you could get city point percents, or perhaps someone read the diary at the library and you can get a conditionally free hero for the exchange. This seems like a good trade for the diaries.