Man I LOVE swapping out background music for my own.
I've been doing it since they added it in Project Gotham Racing back on the original Xbox. Being able to play your own music in racing games upgrades the experience in every way. Doing it through the console also meant you didn't lose access to the in-game sound effects; only the music would be different.
It was my shit for Geometry Wars, WipeOut, Forza X, DoA 4/5, CoD MP, Gears MP, and a number of others. Some of my best memories this generation were kicking people's asses in DoA to
James Brown's Big Payback, or flying down a WipeOut track listening to
D'Angelo's Crusin'.
If anything, I expected these kinds of features to be more prevalent and integrated across more titles. Not this bullshit.