You know what's worse? Many other plot points in this arc, if rearranged, could have been replaced by the effects of the Calamities awakened:
1) Instead of the umpteenth fake death by Kanjuro who is now a flaming ink monster because why not, just turn King into Rodan and allow the Wildfire to set the whole Onigashima in fire.
2) Instead of chapters and chapters of Queen doing nothing while people turn into ice onis, save it for the last part of his fight with Sanji and turn him into a gigantic humanoid brachiosaur that exhales huge clouds of viral gas out of his jaws. Just imagine awakened King and Queen arguing while fighting Zoro and Sanji because their disasters are affecting each other (King doesn't want coldness and Queen fears King's fire will stop his virus from spreading).
3) Have Jack run like crazy while draining every drop of moisture through an enhanced form of fishman karate allowed by his awakened stats. Since he's now stronger, have Inu and Neko team up to defeat him in a way that Raizou can only release his Zunesha water safely once Jack is gone, this way intensifying the link between the minks and the ninja.
These are quick ideas that of course could be way better, but heck, what better for three guys labelled "Calamities" than actually turning into the embodiment of disaster in the form of three gargantuan beasts capable of setting everything on fire, spreading viruses like crazy and drying the world off?