Ah, I just made a long post here, but I lost it. So I'll summarize.
I don't really like disc 3 of the first game because the job gets boring after you play it a lot, and I like to explore Dobuita, and you don't have too much time to do that in Disc 3.
And Disc 1 in Shenmue II gets a little boring after you play it a few times, finding the Wude isn't exactly fun.
A few other annoyances here and there, but nothing major. I don't HATE those 2 parts, just I'm not always excited to play them