> I can't even say how many users this site has now. > I cannot test new features and see if it makes users happy so they come back more often. > I cannot see

> I can't even say how many users this site has now. > I cannot test new features and see if it makes users happy so they come back more often. > I cannot see if the site has issues on some hardware, software, language. Because I wouldn't see if users affected come back less often. > I can't test if an introduction text at the beginning helps users discover important features. Because I can't make the connection between showing the text early on in the user journey and usage of features later on. Because I can't see a user journey. Why don't you just ask your users about these things ?