Just to qualify before I go further - I say 'so few ...' because there may well have been the odd participant created event or two on other EU planets, although in my experience, I've never seen any participant generated event shown in the in-game event list.
Anyway, why are there so few events on other planets? One or two planets have been struggling in recent months and years, so regular events on them may increase their popularity. I realize how other planets are set-up is slightly different than for Calypso in terms of AV owned LA's, but still there should be regular participant generated events on other planets. I think this would be a good thing and would like to know what everyone thinks on this. ...