I recently finished "Rich Man, Poor Woman" in order to watch this drama, but honestly the two dramas are so different... It's hard to even think of "Faceless Love" as a remake of RMPW if we're being honest.

First, the story is fine. It's a really easy watch, so I was able to finish it within a couple days which is sometimes hard for me to do, personally. However, I also get the feeling that I will probably forget within a few months. Second, the actors all do a fine job as well but no one really stands out in my mind. Dew is a little wooden and Luke is overacting a tad during his angry scenes. They're both super good-looking though so I didn't really mind that much. Kao is a good actress but can't really rise above the kind-of meh script.

Now let's address the changes from the source material I liked and disliked as well as just some general likes and dislikes:
Likes: The series is more of a straight-up romance compared to the original, which desperately needed more romance scenes (Thank God for the follow-up movie); The motivations of Luke's character make more sense than in the original; The family scenes with the FL and later the ML's family were very heartwarming.
Dislikes: Dew's character isn't presented as a "genius like in the original, which makes him seem like just a spoiled brat. Like, why is even the CEO of the company in the first place; June's mean girl is entertaining but her motivations are weak; Kao's character doesn't become her own person like the original.

On a side note, I feel like this series misrepresents prosopagnosia (face blindness) and Alzheimer's (dementia) in some ways. However, since I'm not well versed in either illness, I will make no further comment. It just bothered me a bit.

If you like any of these actors, I would recommend the series. If you're a fan of the original drama, I probably would not recommend because it's too different.