The problem with WWE PPVs is that they have 1 per month, none of them feel big as they just repeat the same matches over and over.
AEW and NXT, tend to have different feuds for each PPV and if they they repeat a match from the previous PPV, it still feels special as they aren't facing each other every week on TV before the PPV.
I think if WWE want PPVS etc to feel special again, they need to sack off most of their PPVs, because right now, they are just a glorified version of Raw/Smackdown