Clues:

1. I'm a popular Nintendo franchise, if not the most popular.
2. I had my name changed to fit into a franchise despite being an original game.
3. I'm often lauded as the best entry in my niche franchise made by a company that doesn't specialize in RPGs.
4. My team quit the franchise after I was made.
5. I'm the most well known JRPG of all time.