The question when looking to add SB to a trainee is and has always been what skill/skills to punt and how much.
So if you want IS your back at square one looking at what skill to cut again.
I'm sure you could make the case that missing the chances on your shots also could be enough to encourage you to build high rebounding, but i would much rather have a player that can shoot and defend/block before i worry about creating a better rebounding player in the hopes of collecting the shots missed.