@Unreal_Josh or someone at Epic, please escalate this up the chain. You have overwhelming backing from the community ( as evidenced by this thread ) to show that the decision to remove the review and question functionality before a new system is rolled out is a very poor decision that harms the community and reflects badly on Epic. Schedule some meetings, reverse some commits, you know what to do.
I am not a seller, but have spent over 15k supporting marketplace creators, gone through the verification process a number of times, written many reviews, and asked many questions.