The thing about all the CGI is that In films like this I think its fine... I made a comparison to the Ray Harryhausen films... CGI is todays Stop Motion animation... Personally I don't have that big an issue with it... It's not like the Battle Of Pelennor fields and Helms Deep were not one big Video Game sequence..
The difference is that stop motion wasn't replacing something else back then that was just as good, If not better, they used stop motion because they couldn't create those monsters any other way. It was the only way they could
Imagine if they were replacing real actors with stop motion puppets, imagine if instead of hiring actors they would use puppets instead..
Imagine the cast of wizard of oz being replaced that way just because the director could, no good reason besides " well, we just want to"