Guild Wars 2

The idea is the same as the bonus exp for killing monsters. Some dynamic events are tedious and last a lot longer than others but the same exp is given. I think it would be a good idea to give more exp the longer the event lasts!

I like this idea, it could go a long way towards balancing risk versus reward when it comes to events, though rather than how long the event has been active, I’d say it should be from the last time the event was completed successfully.