She needs to do songs that can crossover, like Super Bass and Moment 4 Life (or other examples, Umbrella, Crazy in Love, Hollaback Girl, Yeah!, Goodies, Me & U, Knock You Down, Sexy Back, etc.). Those are always the most successful overall, and people of both music tastes usually like them.
But I don't want anymore europop songs (not just from Nicki, everybody in pop music, I'm fed up of hearing them constantly on the radio for the past 5 years
).