Thanks! I'll see what I can do about addressing those. The only tricky bit I see in there could be adding new sounds. Monogame seems to be pretty picky about what sound formats it accepts, but I should be able to work something out. Regarding "My ears I played the game mostly on mute after some time", was it a particular sound that was aggravating?
For upgrading, I might be able to work up a tool to do most of the work automatically. The big manual change, though, is in how transformations, operation, and construction handles items. Instead of Construction taking X items, or operations requiring an item per X seconds, it's now all defined as X items per season.
So a bakery used to take 1 wheat every 7 seconds (or something like that). Now it consumes 5 wheat per season.