JT Miller Sent Down

Jeeze, at this point, the Rangers have improved the WolfPack more than they have the big league club.   On the face of it, Miller has been sent down so he'll get to play top 6 minutes while Callahan takes his spot of the regular roster.   What's not clear is why is it Miller?   Why not Pyatt or Boyle?   Why is it okay for the team to yo-yo some of their best players just because they're young?  Talented but inexperienced trumps big but bad which is all that Pyatt and Boyle are.    This is silly, and the Rangers still have roster problems, and two 4th lines.