Currently only Promasters can edit but no one can change the suggestion details. It would be nice to be able to change all the details of a suggestion, but if I had to pick it would be to update the suggested owner or suggested expert for the process for example since we have had turnaround in the company and some of the listed PO/PEs have left. This would significantly help our reporting and make our lives easier from having to delete and recreate the suggestion whenever we want to make a change
Suggested Processes should also be able to be archived or deleted by the Group Champion. There are a lot of actions that can happen after a process is in this state, and the current behavior of the system assumes that all suggested processes are in fact a process (rather than an activity or represented elsewhere), the suggestion is placed in the right group (implying the ownership is correctly known), as well as all the other information provided at the time of suggestion. Identifying the validity of a suggested process should be a normal part of group ownership