Clemson and lsu-br ARE the Tigers.
We are the Ragin' Cajuns. If we roll out a gator mascot, people will confuse us as being the Gators.
With a group of people as a nickname, unless you have an actual person as a mascot, the leprechaun at Notre Dame, your mascot almost by definition has to be, at best, a background figure. It's something that adds background as to who you are without confusing people.
Tennessee VOLUNTEERS have a dog mascot, a coon hound.
Texs A&M AGGIES have a dog mascot, a collie.
The beauty of the Catahoula is that it is original, is not confused with a bulldog to where people will assume you are the bulldogs, and it is tied to the state.......a state that we want to have as our name.
The only way we can have a mascot that can be front and center, with the crazy guy in an animal suit that everybody just loves and doesn't cause mass confusion as to who we are is to change our nickname to whatever that mascot is.
Now, who wants to change our Ragin Cajun nickname?
Not me.