Without writing a separate addon for ULX it's not really doable for me to integrate it so heavily with ULX.
I understand that it's convenient for you to have the warn command in the ULX menu, but with the warning menu, there really isn't a point to that.
I am changing some of the base code to make it modular. I'm mostly doing this to add support for MySQL, but I suppose if it's not too difficult to do, I can add a module that replaces all of the commands with ULX compatible commands.