Its funny because you described liberal Freemasonry: mandatory attendance twice a month. Forcing yourself to go and feeling the honor of being part of a group has been great for me.
I'm sure other groups have that kind of rule too, but the mandatory part is what makes it special.
Well I wasn't suggesting mandatory attendance to every event, but I think if someone doesn't show up for say 2 months their space should be freed up for someone else.