Maybe im mixing up the movies now, but AT-AT assault looks similar to Empire. Rey or whoever was the mc again, gets taught the force in something that looks like a similar fashing just more "Wow, the force!!" rather than wax on, wax off. It makes sense that it would happen now, its just that the previous movie already felt a lot like they were just riding on the old story lines, and then this one kind of hints at similar concepts already.
It's still probably going to be solid, it just seems like they arent going for anything thats going to last. Will have to see it though, trailer doesnt give me any excitement but only makes me doubt.