Qlik is correctly focused on real time analytics. I think it would be a great and unique feature if Qlik offered a Future option.
On relevant time based charts, there would be an option to select a time span (e.g. 6 months, year, 5 years) and a suggested forecasting technique, and the chart could extend to show (highlighted differently) the forecasted results.
If you could also adjust current variables to show what if scenarios, then this would be even better.
My knowledge of forecasting techniques is limited to google searching, but I am getting asked more frequently about how to include forecasting within a Qlik app.
This is not for end-users or beginners, but every experienced Qlik Developer should be able to built what you described by his own using the already available expressions.
