minor thoughts for improvements

I have a couple ideas the first is a save letter function we all lose letters to all the daily reports. It would be nice to save maybe 10-15 letters.
And the next idea is enhance main building to increase peasant production.
This would not be slavery no buying or selling of people. And it would cost coins so haypi could make more money.

Enjance people would mean a larger gap between coin buyers and non coin buyers which means I wouldn't support it

And letter saving has been suggested before