I had fun playing bagball for a while with my RP guild, but as all regular, scheduled events, it's hard to always have enough players. There are always less and less partakers as time pass.
But it was very fun. We were doing it on the bagball field of Europa, on Felucca facet. We never had a problem. Once, a red ghost came and asked for a rez, but it's in peacezone and there are NPCs near so he got guardwhacked (it was when reds weren't accepted in guardzones).
I did a match or two after, with other people, in Trammel. But it's not the same.
To help bagball, there should be an NPC selling bagballs and stuff to fill the bagball easily just next to the field.