"He is no fool who gives what he cannot keep, to gain what he cannot lose."
This game would seem to make passing your spare 5/10/K to partner almost mandatory.
Certainly, if indeed it's a spare. If on the other hand it turns a M-2-3-4-5 run into M-2-3-4, I would stay far away.
Edit: I also like that it gives another option for using the Hound & MahJong.