The level of detail in the GUI is a matter of constant debate. The underlying programs are far far richer, so the question is how much to expose in the GUI.
How about the simple and elegant way it is done in Refmac? Tacked under "Developers Options" is "specify an external keyword script file for Refmac". I frequently use this and always wished that *all* CCP4i GUIs had this. Sounds like something that lets user enjoy the simplicity GUI yet allowing flexibility of using complete functionality of the programs. This should be very easy to implement. Dima