How many players do you think can work in an event?
Preferably smaller groups around 3-10
Did you like the old 'bounty board' monster hunting events?
It was rather successful in general
What is your opinion on PvE in events?
Personally I dislike them, it relies far too much on minecraft mechanics.
What do you think of allowing some events, such as dungeons and fights, to be repeatable to allow different groups to experience the same event?
Depending on the event, possibly implement some lore that would explain the ability for multiple groups to experience the same event.
What is your opinion on large event storylines? How can they be improved?
They have the potential to be effective. If done properly, they should effect the majority of the playerbase in one way or another.