@sitesforchrist: To hide the admin you could use something like this: https://buddydev.com/plugins/bp-stealth-mode-for-site-admin/
@antonop4u because users can change their display name (unless you are going to institute code to lock their display name in place), using their display name in the URL will probably lead to issues if a user changes their display name, breaking existing activity URLS. In a worst case scenario a user could change their display name to match another user and cause some interesting collisions.
