Do you think of making a custom Tor domain for Mixy.Money?
Tor links like
mixymoneyxxxxxxxxx will be cool as a brand Tor domain for Mixy.Money mixer.
It helps your users have more convenience to recognize the Tor domain of Mixy Money. It also help them to have a good support to avoid phishing links.
A scammer looking to impersonate Mixy.Money could just as easily generate a vanity onion address with a similar prefix for their own domain. While it might look cool it doesn't do anything to prevent users from falling for a phishing scam. The best way to protect yourself would be to bookmark the official onion URL and only access the site from there.