Watched this this evening, and as far as Shonen movies go, its perfectly enjoyable.
The Two Heroes scene in the final fight was fantastic to see with the great MHA soundtrack going, especially considering we're very unlikely to get a similar moment in the show considering how S3 ended.
And just enough of the regular cast were featured in the main plot, so unlike a lot of other Shonen movies, it didn't feel like characters were showing up just for cameos in the fights.
I'm 90% certain that I booked for the sub showing at Vue, but it ended up being the dub. This was my first time encountering the dub for MHA, and as mentioned in the review here, it was actually pretty good. There are a few lines I may have had re-recorded if I was the voice director, but the performances matched what I expect from the characters.