I will confess I only watched a couple of episodes (from seasons three and four) before making my mind up, so any errors in judgment must be due to sheer lack of time..!
Besides, however complicated the plotline - and god knows it was!! - it didn't take that long to get the hang of this, at least for a frumpy old lady like myself with a baggage of more TV-shows than I care to remember or admit to having watched.
I found it to be a darkened and updated version of 'Beverly Hills 90210' or 'Desperate Housewives' and GOD how I would have loved this as a teenager!
(As indeed, an impressive amount of teenagers around me seem to do.)