If I were getting paid exceptionally well to make custom edits and remixes for dancers, instructors, and fashion shows, that might peak my interest. That's not the case with social events and mobile DJs. The edits that do get requested (or preferred by me) tend to be rather simple and involve only the need to remove or extend something. Those features would have been nice to have BITD in the club but, don't matter much too me today.
I suppose if you work with emcees and dancers that teach and lead group dances the FX would provide a nice simple way to bed the instructions/follow along segment with rhythm and key music without revealing the full track prior to kicking it off.
Other than that, mobile gigs need to have more accelerated mixing than a club (more songs packed into less time) and if it's a diverse age group like weddings people respond better to tracks that are true to the radio version they know and like. Used in a mobile setting I can see a lot of DJs undermining their own best potential by letting the "mix" get in the way of the music.
YMMV