Someone suggested this in the Discord server. I think it's a good idea. Fishing could be more expensive than farming, but are unaffected by radiation. Tourism could be like Commerce, but is affected by time of year like farms.
So, one person in the Discord suggested Fishing and Tourism. You know what, it's a good idea. Fishing could be more expensive than farming, but is unefected by radiation. And Tourism could be like Commerce, but is also affected by the time of year (and do to that of course, provides more income than Commerce when it is Tourism season so as to be worth it to build.