thantks for this nice plugin.
I'd like to contribute with my little two cents, giving you some suggestions for future implementations.
a) Make possible for users choose the format of the title . Sticking on an h3 it is not the best case ever.
b) Allow pagination in the event's list. I didn't create too many events yet, but I suspect the list is not split in pages.
c) labels in a dropdown. As labels re effectively the category, these would be useful to have in a combo for later usage. Combo to contain an "add new" to display an hidden textbox in case a new one is required.
and yes, I agree that making the description field a bit longer may be useful but not really necessary as there are different way to overcome to this limit with wordpress like creating and linking to a blog.