The short version.
Dragon Ball Xenoverse 2 is a fantastic game, especially if you happen to be a fan of Dragon Ball. Xenoverse 2 fixes a lot of issues that the first game had but it created some new problems along the way and sadly ripped a lot of its content from the first game.
All that said, here is what it comes down to. If you played the first game, wait for a price drop. If you didn't play the first game. This one is THE Dragon Ball experience bar none.
The long version
Dragon Ball Xenoverse 2 is fun, it is. But most of the story and the side quests are lifted right from the original. And if you happen to transfer your character from the first game you see them maybe 5 times over the course of the game and then never again. You can't even pick them as a playable character in side quests or Expert Missions which I found to be a little disappointing.
All that said, there are some redeeming values here. The hub is huge and once your character gets their flying license its really immersive to fly around Conton City looking for side quests and training with your favorite Dragon Ball heroes. Getting new attacks, and clothing options is much easier, and the game is much more balanced. (Though not perfect)
The biggest new feature is the new Expert Missions which can be played with 6 people. These are fun if you can get 6 people together and they do provide a nice challenge. However this creates the biggest problem, when doing Expert missions or any mission for that matter.
At the time of this writing, only the party leader gets credit for completing them. You can still get new attacks, items, clothing, EXP and Money but the game does not recognize YOU completed it.
In other words if you and your 5 friends want to complete all the expert missions will need to play each expert mission 6 times for you all to get individual credit for completing it.
Overall the game has a lot of content, and as I said if you didn't play the original you will get the most out of it. If you did, I would suggest waiting for a sale or price drop.