I don't have it yet!! But from what I've been hearing so far there are mixed opinions (well it was there when they announced these games too) about it. I'll be getting these games for Christmas, so for now no real opinions about them just yet from me, I do find it neat though that
Spoiler:
all past legendaries (except for mythicals I'm sure) are able to be caught in these games, and the fact that they brought every evil team so far in USM too. I can't wait to play them to see how this all goes down!