Not all of the free DLCs appeal to everyone. Some like the alt Yenn appearance, some don't. As such, they choose to use it or not as they prefer.
Some people won't like new game plus. Either they want to start from the beginning again or they don't plan to replay the game or they don't like how it is implemented (more details on this coming soon). We know that not everyone will play with NG+, but it was an extremely popular request, one that the team has worked hard to fulfill. We hope most people will give it a try and they will like it. However, if you don't, no worries. There is still the Expansion Pass materials starting later this year. Hopefully you'll prefer those more.