It is important to see how others are doing things, it gives you a chance to see where you could do some things better. I propose that the Plone community begin to bookmark valuable design patterns.
Think of it as a study of the artifacts of other applications, in a sense a bit anthropological as Limi suggested at the 2010 Plone conference (see http://blip.tv/file/4310012 start at 39:24).
The archive might be organized in a manner similar to the implementation at http://ui-patterns.com. When you come across a pattern that you find useful just make a note of it and how it might be helpful to Plone.
- A good reference for features that can be added to future Plone releases
- The beginnings of a lightweight Human Interface Guide for Plone
I think this is different from the http://plone.uservoice.com, because it isn't a direct request for a feature, it's just a catalog of "useful approaches".