Yeah the UK version of the Fab Four at middle/super middle was intriguing and I think fans far afield of the UK were interested in their series of bouts amongst each other. But not because there was a WBO belt at stake.
I think more so these days and also then, it is also the boxer that makes the belt too. Eubank was involved in some big and great fights with Watson, Benn, Thompson, Collins. As also was Calzaghe. Steve Robinson had some great matches as did Naseem Hamed after him. I know the above are UK fighters but the USA had some big names in Michael Moorer, Leonzer Barber, John David Jackson, Tommy Hearns, Winky Wright,