Boston Celtics are showing promising potential despite some uncertainties. They have a strong starting five with a hilarious net rating of plus 74 in 87 minutes. However, there are questions about how all the pieces fit, especially with Jalen Brown's performance and shot selection. The team's playmaking is decent but can be stagnant at times. Although they have performed well against weaker teams, it remains to be seen how they will fare against tougher competition. Overall, the Celtics have a high ceiling but still need to prove themselves against stronger opponents.