I used to have this problem all the time - not being able to stick with one comic because in six months I'd want to be able to include another group of characters so in the end I came up with a stupidly big plot that is about whole groups of people interacting in different ways at different points. I guess Chauncey (the chap on my icon right now) can count as the character uniting them all through his misadventures but really the main purpose of my webcomic is to share stories of all those imaginary people in my head so I don't really care if I can't fit the usual protagonist + antagonist + best friend + love interest structure. Life's too short, you know? I don't want to be bored with something I do in my free time.

And because I'm a slow drawer right now I have this arrangement of the main plot plus random shorts involving different characters plus random doodles involving whoever I feel like (I swear this is not shameless self-advertisement but if you look at my gallery it's easy to understand what I'm talking about). I still don't draw my gang enough but at least I never feel bored.

This is the point where your parent walks over and tell you to walk away from that crazy person without making eye contact. %) Oh, and I added you on DA, I'm more active there since this site doesn't get much action, especially for artists who draw mostly humans!