To some people, winning is the fun part of the game. They don't enjoy failure. They want everyone to research to reduce challenge. The perfect game is winning on the first try as quickly as possible.

To others, fun is learning, failing, and succeeding. I like to take on challenges fresh. When I'm experienced, I like to play with a mix of vets and noobs to keep things challenging and interesting. The perfect game is struggling and earning success.

The two perspectives aren't compatible. Fortunately FFXIV provides PF. I don't think winning should be the default mindset for DF. Let PF be for winning, while DF is a challenging mix of vets and noobs. No research required.

I guess the JP community uses DF for winning and PF for learning. I don't like this approach because there's less challenge, less mixing of vets and noobs. It optimizes farming and isolates noobs. It's ok that different places have different gaming values, but I don't want this approach in NA community.