Will we continue to be able to filter display names if we run over our currently selected tier? Is it possible to automatically bump up the tier? Is there a grace period with a notification email? It's very difficult to forecast the number of users which may install and play our game and if a massive influx happens for any reason we want to ensure that display name filtering will continue.
Also, in the limits page the pricing doesn't include the per month element which makes it seem like a bulk purchase option. The only reason I know it's per month is because I went to the Add-ons page.