The issue is that "retaining players" doesn't get added to the plus column for me. That's breaking even.
Losing players is a negative, gaining new players is a positive. Keeping guys here is treading water and avoiding a negative
And so the question of "Does adding Kozlowski and Keita and retaining others make up for losing Chandler and Jaxson Robinson?" Is really just Kozlowski and Keita vs Chandler and Robinson (and ignoring the loss of Khalifa).
And in that calculus Chandler > Kozlowski, Robinson+Khalifa > Keita