Everything that made the first series great, is also present in this one. Though the goal is a bit more modest: it's the Under-19 championship, and not the world championship. But since it's been seven years, building and fighting techniques have advanced as well -- there is even a dedicated "Gunpla Academy", which has dominated the nationals for six years straight...
It's a bit more "shouty" though. And while there are plenty of female characters with lots of agency, I wasn't that sure about some of their wardrobe choices. And the final episode was a bit of a letdown, really.
But it's still way above the average shounen series -- when was the last time that a shounen series showed morning sickness as an aside?
If you liked the first series, you will like this one. I'm not sure we'd choose to watch a third series, if that would ever materialise, but we've certainly had fun with this one.