New kind of powers need to be introduced (not devil fruit)

HEY! In one of my old blog posts I mentioned how there are too many DP powers. Its getting really annoying because in almost every recent arc there were like more than 5 DP users. In Punk Hazard there were Monet, Baby 5, Momonosuke, Smiley, Caeser, Smoker, Buffalo, Vergo, Kinemon, Kuzan, Law, Kidd, Hawkins, Apoo ETC ETC. Oda should just introduce more haki users or throw in a cool new technique. And if they just used more of that or a new kind of power came up in the upcoming chapters the story might seem a little less cheesy even though DPs are freaking awesome. What do you think?