As long as there is a need for a Teamkill and Cheat Community there will be activity. But even if there's no activity at all this place will be around. The important thing is to make it easier for people to find this place. The idea is that the community doesn't look for people. People look for the community. Otherwise this will turn into some kind of playground where we seek to please users, like all those real life political parties that look for votes when they talk about lowering taxes, free trips to the sun etc.
Objectively, activity is going up and down. That's normal. It all depends on what games there are, if they are popular, what season it is as well as other factors. Activity is usually highest around christmas and lowest around the summer/early fall. In the beginning there was no activity at all. There's nothing that says there can't be new beginnings if that is required.