Track loading buttons on 4-channel controllers!

I would like to suggest 4 track loading buttons on the next 4-channel controllers.

When I switched from the SX to the SZ, I started having problems loading tracks onto the decks.

I always use my scratch tracks on deck 4 and often load the track that would be on deck 2 onto deck 4.

So I'm listening to the track that's starting in my headphones. Then I start mixing and

I increase the volume on deck 2, but I'm actually playing the track on deck 4. And I'm still loading the track over the scratch track. This is a serious problem.

So, forget about this button that loads both decks 2 and 4 and go back to using a separate button to load the track for each deck. Thank you!