There are a few cases of interesting usages that come up in issues, but which don't seem appropriate to put into our main docs (b/c we don't want to bloat our docs). If we had an Examples page in the docs, we could show off all of our cool ideas for how you can solve problems with webargs, but without disrupting the flow of the main documentation.
Specific cases which would be good candidates for example apps:
I did a quick scan of closed issues until I hit the 5.x/6.0 transition point, then called it a day. Maybe there are other interesting examples in older issues? Or maybe we have things in other parts of the docs like the upgrade guide which would be nice to separate out (or even just duplicate).