I will say once a year is enough. Having it happen once every six is just a little much, and in truth I'm quite bored of fourth wall events for Route. I didn't really have any fun outside of a single thread during the last one since it just felt so... overdone and stale to me. Speaking as someone who has been here for all of them, that is.

So as far as I'm concerned, having a full year-long break from it until the next one would be good. Though if it sticks to two, I won't complain. I just think two a year has always been a little odd.

ninja edit; though if they do stick to twice a year, it would really be nice if the 4th wall event wasn't ~*~the big thing~*~ that month. Having something more unique and interesting instead of something we've done four times already would be nice to help those of us who are kind of bored of it.