Good work, but I think that creating such topics will be useless because they need constant updating, something that is done automatically by scripts, not forum topics that are static and need manual updating.
Over time, you will need to update the topic daily or every few days, otherwise it will be useless.

Also, such statistics are of little use and only benefit in the personal glories of those accounts, meaning what will the community benefit from knowing the top 3 Merit members?