#1 Creating weight divisions

While a variety of combat sports like MMA, Boxing, etc have different weight divisions, WWE does not have any such weight classes.
Given the vast roster of WWE, some of the talented performers get underused and undermined by the creative. And so a proper weight division could solve that problem to some extent.
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Though weight class would have its own pros and the cons, the pros seem to outweigh the cons by some distance. Weight divisions would give a large number of talented superstars an opportunity to shine at the top level.
We can have the likes of Finn Balor, Cesaro, John Cena, and Braun Strowman holding the WWE Championship at the same time in different weight divisions, plus another set of superstars fighting them at the top card for the championship.
Yes, it would reduce the possible feuding options for a superstar, and deprive us of a few dream matches. However, to solve that situation, WWE could have superstars of the respective divisions going up against each other at certain pay-per-views like Survivor Series or WrestleMania.