I understand that the website is trying to report more accurate numbers ... however, I believe switching to monthly data is not the approach to go.
The website will lose an edge as there are many services or even leaks (i.e NPD) that provides monthly data... and most times it is more accurate.
I addition, I think this means less traffic on website since people interested in numbers know that it will be only once a month visit rather than a weekly visit.
Just my 2 cents......