It would've been quite useful if each server in Server Status showed the highest amount of online players it has achieved within last 24 hours.
It would be useful for people looking to join a server with a higher player count, I mean 24 hours is a bit low 3-7 days would be a good amount to get the right numbers.
I like the idea, but I think the watchdog page would be the wrong place as it is meant as live monitoring. I had been working on a new website which would include such information but the project is on ice atm (time requirements I don't have atm.).
totally forgot about this: Players and Performance per Server Players and Performance per Modpack Daily Playtime per Server