I know I felt pretty awesome when I did it.
Infinitely better than what I had previously, not only was my account name dated, but I had a picture of me before I grew my hair out as the account picture...
Nice plan, I used a symlink to quickly heal fixed paths in configs like
ln -s /home/NewAffirmingName/ /home/OldName/
That way if a setting I transferred over is trying to pull a file from /home/OldName/Gamesave instead of ~/Gamesave it will still work... unless it doesn't recognize symlinks... but for a lot of stuff it has been working.
Im happy to say, I have zero proper security practices, 90% of my machines run as root >:3
also CONFIG_MULTIUSER=N is something I have done, so I funny enough cannot relate