Well on your bone development. We still develop with bone structure. Now puberty blockers from what I read do to an extent limit broad shoulder development and other male features. Ultimately some things we can't stop because genetics still do their thing i.e. height, build, and bone structure. As far as the body hair, facial hair, and fat distribution gets altered a lot. Many on puberty blockers don't worry with laser hair removal because the beard hair gets stopped in it's tracks. So yes you are right that it does stop some things and not others. I have seen some great results from puberty blockers as well as testosterone blockers. So I believe both ways have their advantages and disadvantages.