I am going to put all of my ideas in one topic.
-Pre-orders
-Console Exclusives
-Uploading of your own soundtrack
-You have a place where you can manage GRID, and have customer support, make a UI for GRID, make deals to sell your games on GRID.
-Ability to make DLC for non-mmo games
-I think it would be cool if you can be a publisher and bully the developers
-I think there is some missing engine parts in the game, such as Tesselation
-I would like to be able to have more than one console and game on the Market. It is annoying, I want to have more games selling at the same time.