I don’t bother with adding any cue points etc in rekordbox as I don’t see how deciding how and when your going to mix before your in the actual situation is very interesting.
but, one of the things I do now do on rekordbox is add the covers or inner labels to tracks that don’t have them. it’s surprisingly easy and it really helps me when scrolling through playlists etc. as I’m so much more used to flicking through actual sleeves and remembering things not by what they’re called but just by what the sleeve or label looks like.
to add the images I just use discogs to source the labels or sleeve and download them. then use the info panel in rekordbox and there’s a feature that’s pretty simple to add imagery.
especially useful if you download stuff from soulseek or digi-rip your own records.