I believe this is a fun show... if you enjoy Dungeons and Dragons, and/or have a very creative mind.
I found that this was a great show, about 4 down on there luck, angery, sad, betrayed individuals that rekindle trust between each other.
Of course this isn't a 10/10 masterpiece like FMA, AoT, or JOJO's... but it didn't have to be to be enjoyable.
I find that too many people expect too much out of a show now-a-days, not everything can be a 10/10 experience.
More so, if you just relax and enjoy content and appreciate its strengths, nothing stops this show from being a 7 or 8/10 for me