I think Team Magma was improved in pretty much every single way. They all look swag as fuck, I love the new outfits. It's kind of weird that Courtney is apparently a pink-haired loli girl instead of a tall, sensual onee-chan type, but I don't hate it or anything.
Yet at the same time they've completely fucked up Team Aqua. I'm not talking about how they're all black now, I don't care about that, it's the fact that they're all literally pirates now. They're supposed to be fucking eco-terrorists that basically cosplay as Pirates for image purposes. These guys are clearly just fucking Pirates. And Archie is a final fantasy boss.
How did they manage to make the worst Evil Team in all of Pokemon substantially improved and ruin one of the best Evil Teams all in one swoop.