The third Legend having another form already, a story spoiler I don't want to point out without spoiler tags, and now Gym Leader rematches? We're so not getting a third version. The only reason I haven't preordered Shield yet is because everything still isn't technically confirmed. It could still be an insanely good hoax, which you'd have to be paranoid to consider, but better paranoid than sorry. Data miners have to know some corrupt guy at Gamestop! They have to have a way to get it early!
To say that isn't Gigantamax Gengar isn't the best Pokemon is an understatement, (even from the meme standpoint) but I don't hate it and I and I like to drink tears, so here's a reminder for everyone that hates it. Gigantamax Pokemon may have a stat boost. (But it's not confirmed, so maybe not.) What we do know is Max Haunt lowers Defense, which is useless for Gengar, so if its G Move is a Ghost Type and does something useful, like oh let's say... literally anything else, then you'll have to look at Gigantamax Gengar in competitive battles!
I know we're probably going to call Gigantamax Gengar G-Gengar, but its mouth looks like Guzzlord's, so can we call it Genlord? What about Guzgar? Hm... I might use Guzgar as a nickname...