whilst not my cuppa, i don't think you can question tiesto, fatboy, deep dish or even ferry as the essential mix DJs.
the essential mix has always had headliners/big names/big hitters/specials performing when live or recorded live from festivals, dance events, ibiza, etc
then during the normal essential mix calendar, there are more genres represented, more underground DJs, more producers/remixers, more artists who are 'en vogue', etc, etc