I touched on this back when I first beat Act 2 and started on Act 3, but the whole time-rewind thing led to some wacky stuff, and it only got worse as I finally got around to doing all the events in Act 3. Most of them retread on what we already did in Act 2 and every single time the story was worse for it.
Gyldigga/Mia? Nah now you just de-curse her immediately, nullifying the moment when Erik finally reached her in Act 2. The Miko in Hotto? Now you just give her the thing that cures her son, no more tragedy. Jade and Rab both knowing abilities they should no longer have. And, inexplicably, Michelle is alive and she and Kai act like they never met, despite the fact that she died in Act 1 and thus should not have been affected by the time-rewind. They both speak as if they vaguely remember her dying though, which is even weirder! I can only guess in an earlier build the whole Michelle/Kai thing actually went down in Act 2 and was eventually moved to Act 1 but they didn't change the Act 3 content?
Risking everything to save Veronica is fine, but I kind of dislike that the party never remembers what happened in Act 2. It was all just unsatisfying across the board. Sure, Calasmos was a cooler final boss design than Mordegon but that's about all I can give Act 3. I hoenstly think I might've been just fine stopping after Act 2 and calling it a day, sorry Veronica!
Oh and the Dragon Quest 3 worship got a bit much, even though I usually love callbacks. Using the DQ3 overworld music for the overworld in Act 3 was fine, but it got a bit much when the skywhale got the Heavenly Flight music, but when you break Calasmos's barrier and his own unique music is then replaced by freaking Hero's Challenge from DQ3 it was just a step too far. And don't get me started on that final post-credits scene. It all felt less like a loving tribute and more desperation as if they felt DQ11 couldn't stand on its own merits without tying it to the most beloved entry in the series.