I got a code for the Grand Kingdom beta yesterday, so I decided to fire it up last night. The tutorial is pretty robust and gives a good sense of the game so far, imo.
It was a lot of fun! It wasn't much watching NISA stream it yesterday, so it was nice knowing that the game was actually pretty interesting. I liked the combat system, and the battles are quick and interesting enough that I could see the game doing very well on a handheld system (I played it on the PS4).
I haven't tried the online mode yet, but I'll give that a go soon if I can.