>>34654660its unfixable. The true problem is the power creep, a competitive scene where the number of contenders continually increases will always lead to some being left behind and a select few outshining all the rest.
The only feasible "solution" is implementation of an optional modes based on tiers of pokemon strength. Ofc gamefreak would never go through the trouble of separating the vast number of mons under different tiers, you are lucky that they made legendaries forbidden in some endgame instances, that's about as much trouble as they are willing to go for.