If he goes to the Yankees for 10 years, I expect to enjoy watching lefties Teel, Casas, Mayer, Devers, Anthony and Yoshida etc. hit innumerable HRs off him just and well over Judge's head into that short porch in right.
I have been wrapped up in this as much as the rest of you, but we have been down this road before breathless about another "generational talent" Japanese pitcher coming over and we will be again before long. I expect YY to be good, but he is a 5'10 righty who depends heavily on a splitter, not a typical recipe for success. The durability of 5'10 starting pitchers is not encouraging. We will see where the fastball sits when he gets here with a normal starter load. IOW, it is not the end of the world if he goes to the Yankees. I would almost rather have him there than with the LAD, who nauseate me at least as much as the Yanks these days. If he has 75% the career Darvish has had, whoever he signs with should be grateful. For all we know, we may have dodged a bullet.
Now go overpay for a SP we can expect to pitch 180 IPs better than league average and sign Sean Manaea and/or Hader while you at it.