This has likely been asked before, but is not likely to have as much detail as I would like to provide. I believe that the Friend Request system would benefit massively from privacy settings, similar to something like Discord. The privacy levels should be the following:

With the brand new mutuals system, this would help with both preventing targeted harassment bots alongside making it far easier to filter out friend invites. A lot of people tend to avoid friending people without having at least met them within a world, or even having a mutual friend associated with them. Though I do know that mutual friends can be disabled on profiles, I believe that this is still an excellent metric to help with filtering as I am sure that few will disable the feature due to its usefulness as a conversation starter.