I drafted in June last year. I thought it'd add a sense of realism, as you don't have control over injurys in RL either.
I still don't mind it. Having seen pre-season performances does help though. I had David Garrard, Braylone Edwards etc. in my team last year. They where high draft picks and failed me big time.
Anyway, I suggest that we find out when everyone here wants to get into a league, find a good time to draft and see how many guys want to join us.