Tharr

I'm a little late to the party, but here's my 2 cents. To skip reading it all: it works, especially if you're watching dramas for romance and stuff, and not caring for logic or the art of making movies.
Basically, all the weak parts are exactly the parts that supposedly is the hook: the dreams. Also, the dreams are the plot devices. SO, putting it all together, that means that the whole show is screwed if the dreams aspect is sht. And it is. Giving an example from a movie: imagine if a energy-bar wrapper got dropped on the floor of a high-tech, very sterile, experimental, scientific building, and that said wrapper gets sucked in the suction mechanism of a door (why even having one??), that produces a short-circuit, that gives a computer error, that makes the system reboot, that has the DEFAULT setting of opening all doors and release all the dangerous, genetically modified creatures you've been experimenting with (and you know they are dangerous), thus the whole movie can be made possible.... In lesser words, if your whole movie happens because you're giving a sht motive, that also means that the movie is going to be sht.

Back to our drama. Like mentioned before, is not all bad. The visuals are good, lots of good cinematography, the colour palette is in tone with the scene, very nice, inventive shots while the "dreams" occur.
Audio. Good I guess. The tracks are on par with the scene, the mixing is done ok. I don't remember the OP theme, but thats ok.
The pacing is ok-ish for this kind of drama. The world-building is a bit clunky, but its ok for this kind of drama. The acting is mostly good (apart the usual cringe acting when "bad guys are trying to sound evil"), if not amazing, with excellent chemistry all around. Also, very important, while weak for the main people, amazing character development with the supporting cast. If I keep singing its praises, Very good moral subjects.

And now the meh parts. The dialogue is meh. Mostly ok-ish, but dumb when the plot requires it. Evidently so when the scene is supposed to be "tense", the character suddenly becoming re****ed and incapable of saying in a normal way things to save a person's life, using the cliches of babbling and half sentences, because speaking like a normal human being would resolve the plot part and we can't have that yet....
The judicial aspect is a joke. The characters are made to be dumb or smart, or introducing some weird plot device, depending on the scene. I know I know,its because they need to drag the story. But thats the main problem, isn't it? If you can't make the story flow naturally, then you're ot doing a good job.
If I'm talking about bad logic, the dreams. Precognition, supernatural, blah blah. Yeah, Yeah, I don't care about that, as in I'm ok with those. The bad part comes from not being explained well enough. The rules are not applied equally, thus: plot contrivances and plot holes. How the fk can you make "dreams" that contradict one another, but also the "real-time" goes in a whole new direction, but not always... Why having them at all if can get the options: A, or B, or C, or all the above. How the tf does that even work? If you wanna go that route, why not introduce some "punishment" aspect? Having powers with just positive aspects and no drawbacks, thats boring. And if you're saying that its supposed to be like that, then the story becomes sht. Why? Because then every fking problem the characters are in can, and should, be resolved "because it can" and, again, that makes for a boring story if no stakes are offered.

So, it gets a rating of 7. It should be lower, because the whole drama is based on the broken "dreams" aspect, but the show was entertaining enough, the acting and character development did all the heavy-lifting. Re-watching value? Hmm, I don't know... I guess, if you're the kind that likes to watch dramas mainly for the "cute people on screen" aspect.
Have a lovely day.