I don't do ticket plans, because I like being able to make spur of the moment decisions about which games I'll attend or not attend. If they sold something like a pre-paid card with 10 tickets on them, that I can use like a SmartTrip card to enter games that aren't sold out, I would totally do that.
That's a great idea. You should run that past someone in the ticket office. Do you know of any teams that do something similar?