That what ur asking for as in the autoplay found in Serato already exists in Rekordbox.
Continuous play on rekordbox
Could it be looked at to have an extra feature on the auto play that does not automix the track. ie play them as singles with not crossfade or mix.
The continous play selection does not play the tracks in sequence smoothly as each one is loaded into 1 deck and gives a slight break between tracks.
This could be overcome with the autoplay loading a track in each deck and swich to each track with a smooth transition and no break.
Currently it fades, or mixes the track which is not always ideal.