I've read almost all the books, but the story of Clary, Jace, Simon, Isabelle, Alec and Magnus... That one I know from start to finish. Can't say I appreciate the movie, but I've found this TV show to be quite interesting. Sure, it has deviated from the books, but I hardly know a TV show based on a book that hasn't. Even movies do it all the time. So I gave it a shot and I'm willing to follow it through. If I wanted to see the story of the books then I'd read the books. When I watch Shadowhunters is really to see what they're willing to do differently. And so far although it hasn't been great, it isn't poor either. I've found it to be a good show to follow. And until it becomes impossible to watch then I'll continue seeing it.
Also true that the cast is a little green and that shows quite well, especially in the scenes that would require more emotion more deep into it. But seeing most are newcomers I'm more than willing to let that slide.
All in all I believe if people go into this with a open mind and not expect to see what they read in the books they'll appreciate it for the value it has.
