Retention process for ideas

As community members we evolve our knowledge over time and some ideas given at an early phase might not even be a valid ide at the time of writing and some ideas might no longer be valid due to changes in the product.

The forum is probably full of these ideas (I certainly have some).

Wouldn't it be good if we could trigger a retention process of ideas (maybe no matter if your the initial creator or not) and if no one objects within a certain time, just put an archive (or something else) status on the idea.