User impact of descriptors

As I write this, I'm installing 1.7 alpha on www.compstrm.org. Now as you navigate the Ark, you can see when the number of applicable commands changes--for any of 6 different command sets. So the user gets at least a small hint that, after a cls command for example, additional commands are now available. (I suspect that breaking commands into smaller command sets will help a lot, too.)

My plan then is to add a seventh command set, application, for descriptor-defined commands. This way the user can at least look and see what application-specific commands are available.

Now, what are the impact of descriptors from a user's perspective? Descriptors can add/drop/change commands and alter the default display as well. This tells us where the value proposition is for 1.7.