IMHO the ranking system could be fine, but teams need to have the same chances to earn points.
PR played just 3 games till the end of july, while Ukraine (and european teams in general) have at least 12 games from EL + 2 games in the finals.
Panamerican Cup and Norceca Final Six cannot happen because they involve the teams playing VNL and there is no way DR would give up these tournaments, because they want to break records for medals and individual awards.
Yes that's why they should bring challenger cup back but if that's not happening it is better to include ranking points from Wch matches