Since that template creates a category, I'm not going to be a fan of this. Yesterday, I had to fix several Unsourced template entries with misspelled names like "Emgland" and others that had things like "Maryland, USA" instead of simply "Maryland." The parameter is supposed to put the profile into the already existing category, but many users don't check this, creating red categories. It's not intentional, but it does create work for categorization project members. Adding another parameter would, I'm sure, increase that work.