The conflict of the two idol judges is a sign of changes on the American musical show. New ways of choosing new artists will become interesting since the panelists have different perspective on musical competition. The evaluators fighting each other aren't common particularly on idol which will make fans more excited not only on contestants but also to critics of the show.
Mariah and Minaj are a very successful artists; Nick is a very busy rapper working on her three upcoming E! Specials "My Truth" while Carey's schedule is also hectic; she designs eight new hues liquid sand polishes and lunches nail varnishes in collaboration with OPI including Stay the Night, Pink Yet Lavender, Anti-bleak and A Butterfly Moment.
The two is very professional about their work. The drama is just a part of the show to make it exciting and at the end of the day it seems nothing is personal for both of them.