I finished Sakura Wars PS4. I think it's a good game, with some of the most beautiful graphics I've ever seen, but it's diminished by a rather cliched, tropey story and quite shallow gameplay. As a Sakura Taisen fan who played through and loved ST 1-4, I really hope they go back to an SRPG for the next game. This brain-dead button-masher action stuff isn't much fun, and there's no real challenge (at least not in this game). At least Koi Koi is fun!
I played about 3 hours of 13 Sentinels: Aegis Rim, but I think that's enough for me. Looks great, but the story isn't pulling me in and the "strategy" parts are rather dull.
On to Metal Max Xeno! I played an hour a few weeks ago and loved it. It's low-budget, but it has a charm and uniqueness to it, and none of the usual same-old, same-old that infects so many games these days. It reminds me in some ways of Tengai Makyou Ziria for the X360, which is still one of my all-time favorite JRPGs, and, IMO, one of the best games on the X360.