There is a good use case documented for Reviewers to be able to edit ideas they've submitted in an ideas portal (https://big.ideas.aha.io/ideas/APP-I-2648). However, allowing them to change the Status of that idea is not a good idea. This is and should be the responsibility of the Product Owner/Manager to change the status of ideas in Aha!.
This request is to remove the ability for the idea creator to change Status of their submitted ideas.
I would also like to see the ability to prevent Reviewers from changing Idea visibility in the Ideas portal. This is the job of the Product Owner.