I think the idea is great, but could be better to apply it in another way, as some people mentioned above. I think that you with your sources have the ability to take into account all % of usages of any pokemon. With that it would not be incredibly difficult to establish all existents tiers: ( uber, ou, uu, ru, nu, pu .. ) and make the ingame tournaments rotative or randomized between these modalities would make pro the perfect game competitively to be able to have variety and use all kinds of pokémon