More of a heads up than a deal
You can now change your gamer picture to anything you want (not rude ones) using the XBOX (beta) app on Windows 10.
Download XBOX (beta) app on windows 10
Click on current gamer picture
Click choose a custom picture
Download your picture (must be >2Mp 1600x1200 - use image search tool in browser)
Microsoft will verify your picture - so no rude ones!