I think you shouldn't be limited to those two. Of course, if you wanted to make just one, either of them could be cool, but think of, for instance, Rangers - Celtic (The forum has plenty of scots after all), Liverpool - Man U, Liverpool - Everton, among others. I'm not demanding you do anything, mind you - but IMO it was a great idea and, if you enjoy doing so, shouldn't be limited to only one of them.
Do u objected? Yes I 'objected' would hate to see the vile each and everytime I started up the game.