This page is not an exhaustive list of the jbpm 3 features. It only a wishlist of the features that you want to be included.
average time per state: create a method that reports for each state in the process, what the average time spend is in that state.
variables per token: When forking you should be able to pass a map of variables to each token,without having to create a sub-process.
ability to turn off exelog: Logging events to the database takes a very long time, should be configurable.