I find it difficult to imagine music where the rhythm instruments follow the melody line. If the melody line sits over a rhythmic groove, a whole range of rhythmic interplay becomes possible.
Harmonized accompaniment should be aware of the melody line: if it follows that line slavishly then pedals, suspensions, discords and their resolutions don't happen.

However, if a singer sings at a floor spot, and is then accompanied by whoever, then I believe that the accompaniment should follow the song.

"the dynamics of voice and instrument are heterphonically conjoined as a single entity," fits my ideas.

Stu