Well, if you want more people on why don't you ask your friends? That would be a solution there.
Currently though, I personally think enough people come on. I've been here for a year and have not played every single game. People are making them and as time progresses they seem to become more and more epic-like. It's not a problem that there's only a certain amount of people on. If you add all the people together you have somewhere between 10-15 people. That's enough people especially in a time when text is almost meaningless.