Resize movie poster grid

After finally working out to manually enter my ip address to get the new october 17 update on the xbox 1 working i see a couple of flaws, one, i use the xbox 1 remote and it doesnt scroll through the lists of movies etc, the controller does, this means hundreds off button presses until you select a movie, possibly,
secondly the poster sizes are huge, a quarter of the size would allow a movie grid showing dozens on the library screen at one time instead of 6 ,surely in this day and age a slider to change sizes is a must, i want to see a screen full of loads of posters and i can quickly scan visually and to navigate Up,down,left,right too.
can this be done,fixed, i dont want to have to use the xbox controller when i watch movies, thats what the remote is for…