It was overall pretty good, imo.
I struggled to see it as being tragic in the way most people did, though. My primary gripe was how antagonists were portrayed. The main cast were mostly solid characters, wherein the antagonists were caricature-grade villains with really no redeeming qualities. It was frustrating to watch for that reason. The lack of depth and sheer monstrosity of the villains took a great deal of weight off the conflicts given to the otherwise reasonably good cast.
So, it boiled down to a strong leading cast, but poor conflicts instigated by characters too extreme for me to take seriously. It was too bad I couldn't buy into the antagonists nor the shit they'd pull, otherwise it was totally my kind of show. I can see why someone would like it a lot for the main group. It was less memorable for me because of the characters surrounding the main bunch became too big a distraction.