Hi,
Our users would really like to be able to derive new data items in WRS. Consider, a categorical item with 5,000 unique values. We can predefine several groupers in the Information Map but we will never cover all the possible combinations that users might want. If there was a CASE statement or some way of writing expressions, WRS would cover a lot more ground.
One answer is to use EG rather than WRS but we're really keen on the web tool rather than the desktop tool. WRS is much easier to use for the bulk of our user community.
Ian