This mode reminds me of the older games like Dark Cloud where you run dungeon floors and advance while you level up. I enjoyed playing with different alt characters and viewing their skills as you easily lvl up in the dungeon.

I feel like it gives me a trial run of the character so I know how they work for me if I like them or not. I hope they add more bosses and floors and as one mentioned before, I really hope they make a Full Party version of this.