So I have always wanted to know when my friends are going to be on the server so we can hang out. Many do not have an alternative way of communication so we have to just guess. Here is the suggestion. Provide more information when using /seen. This could be time frames of when the person logged on first, how long they were online for, and when they logged out. Currently /seen only states when they logged off and meeting someone when they have to leave is not ideal of course.