Krita contains a large number of tools for painters, a large number of settings and features. Their number increases every year, but not all of them are popular. More precisely, the critics want to know which of the options are popular. Based on this information, you can determine the vector of further work, finalize popular, but not too well-implemented features, remove old, useless functions. Use of clickstream analytics will help to learn the popularity of features.
Full version of proposal you can read here.