I watched the Japanese version the the other day. My first thoughts were around the condition of the film in certain areas. I had heard about the issues, but damn was it depressing in the monster scenes.
The second thing was in the Japanese version, they kind of, lose track of Godzilla. Unlike the Heisei series where they had these giant war rooms, the military legitimately at one point go: he's in this general area. Instead of thinking that was dumb, I actually thought it was really cool! Godzilla and Kong were kind like Tornadoes: Okay, let the people know to get out of the way, we'll see what we can do. The other point I liked was the LACK of Godzilla destruction. We know what's he's capable of based on the first movies, but this is the only film I feel where I realized there is not real legitimate reason for Godzilla just to head into cities aside from the destruction porn. If Godzilla was real he might just show up in Tohoku and hang out in the mountains for awhile, why not?