All valid points and I would just like to add that I feel there is a great need to also include a Version History expandable section between the Technical Details and Contact and Support headers on any given UE4 Marketplace product and would behave similar to such marketplaces as the **Apple App Store.
**I feel this will also be useful from a compatibility standpoint where a UE4 Marketplace product might not just update compatibility but also take advantage of features introduced in newer builds of **Unreal Engine 4 **which the customer should be made aware of directly on the store page and not on some forum thread.
Furthermore,
I would like to voice my support for a standard 4-5 star ranking system with or without written reviews for the time being.