I think the decision only has to be made at the top level, the graphical UI. One of the things I like about Mac OS X is how solid the command-line "defaults" m

I think the decision only has to be made at the top level, the graphical UI. One of the things I like about Mac OS X is how solid the command-line "defaults" mechanism is. It has allowed me to expose everything that might be useful to configure, while still trimming the graphical preferences UI and setting a series of factory defaults. So an app can be both simple and flexible at the same time.