But you know, you can just place a random horizontal fader on the deck and so no one would complain about the DJ deck's lacking of a crossfader XD



But, actually what's a lot more vital than a crossfader is a pitch fader. Without that you will just be able to mix musics with exact same tempo. I actually complain about the lack of pitch fader when seeing Vinyl in the show, but crossfader is a much more obvious part on a DJ deck.