That doesn't matter. At least the main championship would actually be the ONLY main championship and it would gain a lot in value and importance.Not happening, nor should it. :lmao if you think people complain now about their favorites not being a world champion or not having a shot at being World champion merge the titles it will get 100X worse.
This is also a great point (Y)The WHC title is literally the only thing WWE actually books on Smackdown with some sort of direction (and most of the time it's completely messed up.) If WWE took that away, Smackdown would be completely directionless and they might as well just call it a training league because that's how it would be booked.