just had a very annoying experience where players kept placing portals beneath me and other players while we were talking, i was able to get back easy because my friends were there but because they were in group we couldn't vote kick them. (it was more users than the one in the portal name)

being able open a prompt to say yes or no would be a great way to stop this, with maybe an extra option being a tick box that say "block this players portals"