That said, while watching I can't help but feel emotional despite the comedy. OK anyway before this review turns into a memorial on Haruma Miura, let me just rate some stuff:

cast 10/10
plot 5/10
fight scenes 10/10

THE GOOD:
I really liked the train fight scenes. It was well made. I'm biased to Oryo so thanks for the eye candy.
As usual like the first movie, the cast is top tier and it's an A-list cosplay movie (lol). The comedy is funny too. I really like Katsura and it was fun to have him show up with the usual shenanigans. And before I forget, Haruma Miura's acting deserves all the awards.

THE BAD:
Let me put a disclaimer that I'm not comparing this movie to the anime. But I guess I'm not really a fan of the serious parts of Gintama. So this movie isn't an exception. I felt the plot was kinda dragging, too. There was disconnect in some scenes (I'm not surprised as this isn't the first movie I've seen by the director). This movie was made with the intention of a next one, so IDK how to feel about that. I surely would like to see more of Oryo and Katsura 3D.

TLDR:
I recommend this movie to die-hard Gintama fans. If you like some slapstick comedy maybe you will find the humor in the movie to your liking too (the comedy wasn't bad).