I don't think the money was there to keep both and Aces have 2023/2024 to win before Young/Plum/Gray are all unrestricted free agents. Per Her Hoop Stats, Hamby's salary was going to be 169k this year while Parker signed at 100k and Clark at 110k. Knowing both Parker/Clark wanted to come to Vegas and were willing to take minimum pay, I think it was a no brainer to effectively trade Hamby + a small amount of cash for these 2. Parker was expected to be a massive upgrade over Hamby and her unselfish style of play projected her to be a perfect fit in Vegas, and Clark coming off the bench as a defensive stopper and shooter also seemed like a great fit. When Parker was healthy, Vegas went 16-2 and the team thrived despite Candace having much lower individual numbers. Since Parker's left, the team was able to keep their foot on the gas for a bit but they've really slowed down the last few weeks as the 5th starter spot has turned into a glaring weakness and the grind of the season is catching up with Vegas's stars. In hindsight, keeping Hamby was obviously the smarter choice but it's impossible to predict injuries (and worth noting, the Aces were keeping Parker at reduced minutes all season likely to reduce injury chances since she is injury prone).