Hao-Yu wasn't a .170 hitter, and he's not a .350 hitter either. I see a little upside still, in that his walk rate in the minors was much higher (10.5%) than it's been in the majors (4.2%) and that often carries over better. I don't think he'll ever hit for average, so those walks will be crucial. His OBP with the Tigers this year is .282, which is pretty bad - and that's including his recent stretch of .350 batting. He has a little pop, we might say "McKinstry power." Overall, I think he's a pretty good comp for McKinstry in terms of what we can expect long term, although McKinstry has been a particularly streaky hitter.
Lee is young enough that we can expect some improvement. I would bet that his best major-league season will be quite decent. But, like McKinstry he'll be more of a fringy reserve player for most of his career (or starter on a bad team), and he lacks the SS/CF capabilities that make McKinstry attractive as a utility player.
Michael