Isn't saying I have no proof for my "regulars filling servers statement" the same as saying you have no proof that the reason your servers stay populated because you do not reset as often? Just a thought. I see other 24/7 servers stay full a lot even with map resets more often then once a day, so it's an assumption to say your server stays full more often because of less resets.
I notice the same players playing day after day on the same servers. This is what a "regular" is. I'm not just assuming here, I know Skial has built up a community strong enough to fill servers. It's silly to say otherwise as you even pointed out, your servers have been the most populated servers for 2 years. What fills servers when they're empty? Regulars, random menu joins, and when the server gets to 6 to 8 players, Quickplay kicks in to help fill the rest. Not to mention the longer a player stays in the server, the more points the server is getting towards its own Quickplay reputation. I'm sure if you checked the reputation of your servers Bottiger, you'll notice most have a Upward Fast reputation.
Plus I'm not suggesting often resets, just resets more often then have been. I'd be happy with every 12 hours because that's twice as good as daily.
As I type this I checked your full Chicago Badwater server. Every player with a star next to their name is what I consider a regular as I've seen them not just once or twice on that server, but nearly every day or every other day I go on that particular server. And keep in mind, this is in the middle of the day on a Saturday. I could do this later tonight and possibly more then half the server will be full of players I would consider regulars:
http://i.imgur.com/1k28X5y.png
As you can see, nearly half of the server is what can be considered a regular. Players that literally queue into your servers when they're full, and go out of their way to join them when they're not full. It's silly to think that these players would leave for a restart because they
prefer your server. And they prefer playing with the same enjoyable players. That's a community. To suggest your community will leave you if you reset a map more makes it seem like the community doesn't care about your server, when they actually do.