i only really have 2 nit-picks with the movie.
1. other jaegers didn't matter, pretty much just Gypsy and Striker did everything. would have liked to see Crimson Typhoon and Cherno live up until the final battle, to be killed by the category 5 kaiju, would have showed how dangerous a cat-5 is.
2. Its established that gypsy's head can detach from its body. was really hoping at the end that the head would launch off and out the portal as the body explodes. instead we get some escape pods we didn't know existed up until the very end. would have liked if some part of the jaegers survived the battle, even if its just the head.
besides that i loved the movie, really hope it makes enough to justify a sequel. also that theme song is amazing. was humming it all the way home from the theater.
At the same time some would have complaints about the head having a propulsion system of its own that we didn't know about. Escape pods just seem like a standard thing to me so it didn't bother me much. I was actually surprised they didn't pull the "my escape pod's jammed!" trope at the end.
I have to say I was a little disappointed in the lack of screen time for Cherno and Crimson. They got wiped out pretty fast and I honestly thought they would get more screen time.
Maybe it's the difficulty of giving each jaeger their own individual styles that would warrant more screen time. Cherno punches things just like the Gypsy and Striker. Crimson's special is dunking things but you don't really need to see that more than once. I suppose there might not be much you can do to differentiate the slow, lumbering mechs that jaegers are though.
The way the Cherno went down was pretty nice though.