I am looking at your product and so far like what I see, I have experience of other event components but want to upgrade to something better supported.
One question: I see you have event creation by users and can control the level of user that can add events. But I really need to be able to control the adding of events by venue/user. In other words have a user only able to add events to a designated venue and not be able to affect other users events. This is probably a fairly common request, ideally users would respect fellow events, but in the past I have had commercial events try to affect competing events. I am an experienced programmer and can change code and add this feature, but some feedback from you would help as your design may or may not make such a feature practicable. I would be using Joomla 2.5/3.x