Daily/Weekly/Monthly chats recap in a personal message by Combot to chat admins and owner.
Some basic but important stats:
Group Members: X (+/- Y) - Y counted towards the previous period.
New Users: X (Z%) - Z counted towards the previous period.
Daily Active Users: X (Z%) - Z counted towards the previous period.
Messages: X (Z%) - Z counted towards the previous period.
Since I am an admin in 8 different groups, I don't want to receive 8 messages. Instead, it would be great to send one message with two buttons: <,>; By doing so I will be able to navigate through them quickly.
The principle for rating them (some will be in the first place and some in last) is, in my opinion, is the number of messages.
It would be absolutely awesome to add more stats in the future, such as reputation changes, moderation actions, etc.