Restrict comments on already-promoted Aha! Ideas

What is the challenge?

Users are continuing to add new scope to an already-scoped and prioritised feedback by posting comments to the Aha! Idea that was already promoted

How would you solve it?

Restrict comments based on whether an Aha! Idea was already promoted or not

What impact would it make?

This will ensure that new feedback do not get lost in comments and fall through the cracks, and that promoted features will remain focused on the original feedback