Its WWE's fault for putting their main title on the B-show and treating as lesser than the title they just made up a few years ago and not having it main event PPVs.
What WWE should have done during the entire Brock run as Universal Champion is to have had AJ Style and the WWE Championship been booked as the main event of all WWE ppvs and get all of the attention and importance on them.... this would be the thing that would trigger guys like Roman, KO, Braun and Seth on Raw to be upset since Brock's hostage of the Universal Championship is denying them the chance and/or right to be in big time ppv main events which would be the catalyst of Roman's new gimmick of "Brock ain't here to work but I am" which he has done as of late.
Then storyline wise and booking wise you could have guys from Raw wanting to jump ship to Smackdown so they can get a crack at the WWE Championship. They could be having a lot of "Loser Leaves The Brand" matches and interbrand promotional matches and etc. Then you could have guys all gun after the Intercontinental Championship declairing "fukk Brock! This IC Title is the TOP title on Raw and will be honored and defended as such" having the IC Title being the constant main events on Raw bringing importance to that title like during Seth's run with it.
Many things WWE could do to make their championships have more prestige but they don't care.