Each episode in season 3 got more interesting and more character development. Adam going away for a while was actually a good thing for the 3 consistent characters to grow a little more, become independent from their \\\"leader\\\". Lexa\\\'s entry was awkward at first but the chemistry with Jesse made up for it eventually.
Last episode left it hanging a little bit but knowing it was going to be cancelled, the writers did give some closure to who is behind the Dominion and who Adam really is. But no closure to what is going to happen to Lexa, Brennan and Shal, whether they will die when their clocks stop tickking or will they find the cure like Jesse.
I know there will not be a season 4 but still kind of wish that it will happen.