That ship sailed long ago, useless to fret about it now. Whether it was Birdman, POB or Moore, it would have taken alot for someone to beat out Davis and Powe for the 1st 2 Bigs off the bench. Moore clearly has taken a bigger role with KG and Leon going down, if those 2 were healthy, he would hardly see the floor except for foul trouble and certain matchups.
All the pining for this that and the other guy really misses the mark with this team. When you have the league's best starting 5, and all are healthy, which they were at the time offseason pickups were being made, how much bench time is even available? Especially in the playoffs when rotations are extremely shortened. Even assuming 35 minutes a game for each of the 5, which may be a tad low, there is only 65 minutes of playing time left for the bench, that is just over 20 minutes a game for 3 guys, and the team already had Eddie, Leon, BBD, and even TA and Scal for those slots. You can debate that Birdman would have beat out one of those guys to make the top 8 I guess, but I don't see it, and how much difference is that one guy going to make playing 15-20 minutes tops?