I discovered Xbox uservoice while I was looking for some help related answers and was quite surprised of it's existence. It seems you can propose an idea, vote for it and have others vote for it as well. I imagine the ideas with the largest votes obviously get worked on first. Ideas that are taken become complete and closed. A few ideas that have been used include back compart and even game releases like the Witcher 2 , Red Dead and the COD series. I think many concerns can be voiced through this method, I also think it is more effective than making videos or raving on twitter since it tallies numbers that are presentable to a board or executive.
Below is a link to the site
https://xbox.uservoice.com/forums/363186--new-ideas
Below is a link to the site
https://xbox.uservoice.com/forums/363186--new-ideas