The name "Ash-Greninja" is pretty lame, but they're sadly locked into it from a few other contributing factors, namely that he's been featured on
Pokemon TCG merchandise under that name as is. Looks like he didn't get the luxury of a name change "Mewtwo-Awakened" got.
Super excited from this trailer, oh man. Popplio's evolution looks a little bland, but the other two are fantastic. Can't wait for the final evos if the leaks are true.
The side features like the box islands this time around look excellent. Pokemon has a bad habit of tacking on side features that contribute next to nothing to the main game (contests, Pokestar Studios, Pokemon Amie, Pokemon Musicals are the absolute worst offender here, who even remembers these?) They make so little difference, they're often completely ignored. The solution to that is making these side features contribute to progression, battling, and collecting, and that's seemingly exactly what's happening this time around. Playing with these features will net you more items, stronger Pokemon, and more Pokemon at that.
Happy to see Mega Evolutions back. Beginning the trailer with Lucario, Kangaskhan, and Salamence was hilarious. I have mixed feelings about the "No Megas" rule for the 2017 rules, but I suppose they want to place the emphasis on Z-moves and Alolan Pokemon this time around. I've heard a lot of comments about Mega Evolutions being overpowered, but for the VGC formats specifically, I feel like its only one or two ridiculous ones ruining the fun. There's such a drastic power difference between stuff like Mega Kangaskhan and viable stuff from 2014 and 2015 like Mega Manectric. At any rate, super happy to hop back in next season! Gotta get a foreign Ditto up to Level 100 for some smooth sailing breeding B).