It isn't a bad idea at all, would be awesome to fight or go watch players you know fight and even talk to an NPC or something and make bets, would be something to do while you was crafting. Also I think with that idea they should make player vs enemies (mobs) type option too where you have up to a group of 4 or however many battle against mobs/NMs til the end or as far as they can get like you see in other RPGs and even other FF titles. I just hope some type of PVP gets added before the end of the year. Similar to WoW's arena 1v1 up to ?v? like 3v3 or 4v4 would be really amazing.

The only problem I see with it is either they can only let one group go at a time, ( or have a different section where up to 4 or 5 groups could battle in different arenas (instanced area that spectators can zone into via whatever, it would be kind of like Karate tournaments where there are several areas set up and a bunch of people fight on different platforms.)