I think they saw how much Olicity exploded between S1 and S2. They decided to test it out with the beginning of S2 featuring Oliver/Felicity development and when that was received positively by the majority of the fans and critics they decided to go full force (they just had to get through a few things first..which were UGH). I don't think some audience members realize everything starts with the writers and evolves from there. Look at Joss Whedon, he was always listening to the fans: killed the Connor plot line on Angel, didn't kill off Spike and is continuing to listen to fans and its improving AOS tenfold. The Fanbase should be your first resource, because are the ones who love the show the most and they will hurt you with that love to make you better. HYMYM LOL I had stopped watch that show, but tuned back in for the finale. I was so angry.