I am with Rex. Not every tartan has to have special symbolic or historical reason for its existence. Some may simply be an expression of an artistic person wishing to make a new tartan, and to register it as such similar to copyrighting one's other unique materials. I see no harm in more tartans----if you are not interested in them just don't look at them. But somebody else might be interested in them for some particular reason and should have the right to see them if they choose, and that goes for registration as well. Live and let live, tartan and let tartan, each in his own way, with respect for one another.