I'd love to have a scan feature that tells me what new cultures I can build in my cities. New cultures often don't show up before you have improved and connected a specific resource, and sometimes you receive a whole bunch of new techs in trade with an AI civ, which can make several new cultures available (the next turn?). In order not to miss out on any new culture available, every few turns I have to check all my cities one by one, make sure no filter is on, scroll down the build list to the bottom and look for new cultures. As my number of cities grows, this is getting tedious. Having any kind of button that immediately tells me what new cultures are available to build, if any, would speed up my games considerably. There is more similar stuff I'd appreciate a report on, like unimproved map resources (I don't use automate workers) or buildings that provide a manufactured resource I don't have yet. But keeping track of new cultures as they become available is my main worry.