Currently, "Queue Next" works like this: -
Let's say you have 3 tracks in the "Now Playing" list and track 2 is playing. If you pick a track from your library and choose "Queue Next" and be queued in the number 3 slot, however, if you pick another track and choose "Queue Next" it would by placed in the number 4 slot and so on. It's not literally being queued next.
So, I would like to see the option to always have the selected track literally be queued next, as I would absolutely switch to that and never switch back if I could.