You posted this in the #forum-feedback section, which is a place for discussing the iNaturalist Forum, not iNaturalist, so I moved it to #general.
The #feature-requests section is for making requests for new or different functionality. There are a few existing feature requests for some of the functionality you described, such as this one: https://forum.inaturalist.org/t/add-follow-option-to-users-in-the-app/31169
But right now iNaturalist is rewriting and redesigning a new app, so there won’t be any new features added to the current apps. I will say that viewing other users’ profiles should be available in the new app, but I can’t speak on the other features you brought up.