Tarnished Coast is currently in an easy match this week. If you have had difficulty completing WvW maps try it this week, especially during off- primetime hours when we are scoring 600pts.
I've done several completions and gotten 2 black lion keys and of course transmutation charges. Also there are lots of other people doing completion so the skill points are often clear or if you wait around will be cleared. Please be polite in map chat if you need help - if you notice a lot of call outs for something under attack, please don't interrupt it with a call for help at the centaur skill point - if map chat is dead quiet though, chances are someone will be bored and come help out