I have noticed, if, for example, I create a custom ranking for a particular Match Type and then I add a new match to that Match Type, the new match isn't included into the custom ranking for that Match Type. I have to manually add it. It would be cool if the new matches added to the Match Type would also automatically be added to the custom rankings that are made for that match type.
A second proposal I have, is making it possible to have custom rankings for defined periods of time. For example, having a custom ranking for matches happening between 1st of June 2014 and 30th of June 2014, and adding any new matches created(that are happening between the defined start and end periods) to these rankings automatically.