With a new arena comes new excitement from the fans. Along with that fan excitement usually comes the opportunity to host an All Star Game. The Pistons are hoping to do exactly that in either 2020 or 2021.
The 2018 All Star game is going to be held at the Staples Center in Los Angeles. It is looking likely that the 2019 game will be held in Charlotte. So 2020 is the earliest possible year the Pistons could potentially host the game.
The fact that the Pistons are opening a new arena and submitted a bid for both 2020 and 2021 means that they are likely to get rewarded the opportunity to host in one of those two years.