The budget for tri. is definitely getting smaller. That's probably why the majority of the last part of this movie was evolution sequences. Not only did Piyomon evolve from Child to Ultimate, but then Patamon and Tentomon did the same. While Plotmon evolved to Tailmon. And speaking of Seraphimon's evolution being filler animation, I'm really disappointed in the fact that Seraphimon didn't even call out his attack during his revealing fight.
There had to have been something else for Sora to have conflict with. Piyomon not liking her just because Sora stepped on her head was very weak reasoning. The other Digimon were perfectly fine with their human partners acting crazy around them (Tanemon thinking that Mimi would eat her; Takeru picking up Tokomon and talking about infections before saying that they're friends now). Sora, meanwhile, brought food and had a gentle approach towards Piyomon rather than trying to pretend as if everything was normal.
I also really didn't like that Piyomon didn't like Sora for no good reason, but was curled up right next to Meiko at first introduction. I understand that Meiko didn't step on Piyomon, but that still doesn't explain why Piyomon cuddles with her. (I will also admit that Meiko has not impressed me in the slightest.)
There also seemed to be some missed opportunities when the Chosen were all split apart from each other. There should have been more of the Digimon learning more about their partners from other Chosen, like how Agumon was asking Yamato about Taichi and learning about that part of him. (My bias will show here, but I also wanted them to do something more with Takeru being wounded at the Village of New Beginnings. I'll accept him being there alone, but...what was the point of him being hurt?)
Between Gennai licking Sora's face and Gennai punching Sora with a cat, I was unable to enjoy the rest of the movie. That scene was really too out-of-place for a Digimon movie, and I wonder what the point of it was.
Despite the faults of Loss, I'll still watch the rest of tri.! Considering what was revealed on part five's poster, things will get interesting (and hopefully better written)!