Felicity may be the necessary member of Team Arrow, but Oliver is the star of the show. Its his story that has been explored in past and present. Its his development and relationships that really matter, and no relationship has been more instrumental to his development into the Green Arrow than that with his lady love Felicity. Its impossible to imagine Oliver sincerely proposing to anybody prior to Felicity, and its impossible to imagine that hed be able to believably move on before the series comes to an end if she died. The show is pretty certain to last through fifth and sixth seasons, but Stephen Amell may not want to stick around on The CW forever. If Oliver is going to continue his upswing, Felicity needs to be alive. Arrow is about Oliver, and Oliver needs Felicity. Olicity has passed the narrative point of no return in Season 4.
Fiction buff and writer. If it's on Netflix, it's probably in my queue. I've bought DVDs for the special features and usually claim that the book is better than the movie or show (and can provide examples). I've never met a TV show that I won't marathon. Follow on Twitter @lah9891 .