Amazon-style Reviews for REs
The ability to trial REs is probably the answer to this but I think it would also be useful for people trialing or who have bought the RE in question to be able to write a review. Maybe this could include creative ideas, comparisons with alternatives/pros cons vs similar devices.
I personally find the 5-star rating system almost completely meaningless and find myself looking to youtube for reviews if they are available. This would be quite useful for those situations where you've already tried out a device but ran out of time before really getting to grips with it (or just forgetting about it until it expires :s)