I speak only in reference to the Live Music events here in SL, but perhaps the following suggestion may apply to everyone that holds events in SL.
With the music scene growing at an ever faster pace, there are at times, conflicting concerts and shows. We are seeing posts to the community for 2 or 3 shows all at the same time. The event times listed are only hourly. Perhaps there could be a half hour planner put in place. It would enable me to post an event at say 5.30 with another Live music event host starting at 6 or 6.30 etc.
It may help us to stagger the performances and allow the individual performers to get at least more people attending rather than have them rush off to listen to someone else, or make the choice. There are times I'd like to see more than one artist play yet have to choose if they are both on at the same time in different venues.
I think it is fantastic that many places are offering Live music to the SL community and I do feel that being able to expand on the times in the events list will allow the artists a better chance of being heard by more people and I know how hard events organisers and club owners work to bring your attention to these Music events.
Of course it will be impossible to avoid all conflicting times for events, I just feel it would allow for a better management of the system.