#1. Worst: A lack of fresh direction at WrestleMania Backlash
One of the big problems, not only with WrestleMania Backlash, but post-WrestleMania season in general, is a total lack of fresh directions. We might have a few new feuds here and there, but if you look at it, a lot of the rivalries are continued and recycled.
With the exception of a few matches, it seems like a lot of feuds are going to continue to be recycled until Hell in a Cell at the very least. While it's normal for a WrestleMania feud to continue on a pay-per-view called "WrestleMania Backlash", there was an overall lack of conclusion.
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Roman Reigns might head in a new direction by facing Jimmy Uso, but it looks like Drew McIntyre vs Bobby Lashley will continue. Seth Rollins vs Cesaro, Rhea Ripley vs Charlotte Flair, Bianca Belair vs Bayley, and potentially The Mysterios against one or a combination of The Dirty Dawgs, The Street Profits, and The Alpha Academy will presumably happen in the next PPV.
WWE needs to start on a fresh page for the next PPV, but we don't see that happening.