You've barely scratched the surface in terms of getting cool items, bosses, and story. It depends if you want to discover the mystery or look into the future by FAQ. A choice you have to make. We'd recommend figuring out most of the game on your own first obviously.

The first thing that comes to mind in the beginning is the Opera. I'll never forget it when someone mentions a first playthrough. IMO it's probably the best game I've ever enjoyed and known for a console game. There are other games designed to be more competitive. FFVI has to be the most imaginative and creative ever yet opinions differ.