At our university, we give students a list of 6 possible usernames based on what’s available and which algorithm used to generate the name. Work pretty well, and sometimes people get really cool ones. They can change their username between their choices at will, again based on availability.
Just an observation, humans aren’t able to navigate heavy snow and disorganized traffic any better. We guess where the road should be, what the conditions are, and where other cars are, and commit with full confidence in our lack of knowledge. It works OK, but there are infinity examples of it not working. Literally any logic behind navigating these scenarios is better that what we can do with our feeble meat suits.