The final arrangement (not post-show, but the show finale) isn’t pop-like at all. Very orchestral. It was absolutely what I want from a traditional Disney nighttime spectacular.
Also, if that’s your sentiment about HEA, it might pain you to hear Mickey’s Mix Magic at DL has completely grown on me this year. The cringiest parts are whenever Mickey incessantly chimes in, but the mix itself is actually great. Also, even the showrunners of MMM were clever enough to give it a throughline.
I find MMM increasingly hard to dislike (can’t believe I’m saying that!), whereas I’m struggling to identify which parts of Harmonious will create that stickiness.