Is there a public ideas exchange? If not I think there should be one, and it should be the lithosphere suggestions (it would be more suited as an ideas board ;))
We do have a public idea exchange we are using for the Lithys - Social Customer Excellence Awards, where the use case is definitely a bit different than ideation. 🙂
You make a really interesting suggestion liamwli and would love to get more feedback from the rest of the community.