The dog? There is the arcanine line, we can extend to vulpix..There is the dog trio, we can say mightyenna, Snubull and Grandbull, maybe the eevee line, Houndour and Houndoom, there is many canine and the type are more diversified than the cats, Imo.
But when I think about it, it's true we had Pyroar's line, Luxio's line, Espurr and Meowstic, but beside them there are all normal type I think.. (And Pyroar is part normal..)
I like the Rotom device but I have so many questions now XD I mean, does this mean we'll have 7 Pokemon with us? How does it work? Is Rotom our starter so? XD
The QR codes is something I haven't done too many research on, I don't really have an opinion, but it can't be bad Imo. Maybe instead of going to the shop for the events we can have it online or something like that. I don't like how easy the legends are now, but it seem to be more and more easy to complete the Dex, shinies, Legends and all.
The region looks cool but I am afraid it's gnna be too much water... We just got out of Hoenn again... if it's a "Hoeen like region" it's not the good timing.