Since my team is on a two-month winter break (ending in January) I've been running more supplemented with some weightlifting once or twice a week.
I've actually felt that running more often lately has decreased my enjoyment of it, or maybe it's just that it's winter so that everything is brown and grey, cold and wet and ugly. Whenever it's warm, green and sunny I can't wait to get outside, but lately I've really had to drag myself out there (although having the dog as a running partner helps).
Anyway, once I select a new gym I'd really like to get back to roller derby three times a week, weightlifting twice and running maybe three times a week max. I think I'm happiest and most eager when I'm cross training and things are fresh and varied.