I haven't used it in years but when I did, it was an absolute nightmare to work with, especially with respect to version control. There was no good way to version control their "templates", and collaborating was always painful. Not to mention the interface felt like it was from the 90's and dreadfully slow and painful to maneuver. The underlying functionality it permitted was quite good though. A facelift and a better version control scheme would help a lot.
It should be used more for building Data Pipelines specifically.