To build the "best" character (CAC), you should focus on obtaining these high-tier abilities:
The best Dragon Ball Xenoverse 2 NSP is the “Ultimate Edition” – base game v1.22, all DLC up to “Hero of Justice Pack 2”, and a stable 60 FPS mod if your Switch is overclocked. With that, you can finally train, fight, and rewrite history anywhere – no Scouter needed.