I thought the execution was terrible. The acting was fine. Camera work was fine. It is just the way they presented her "death" is what I have a problem with. Song choice I didn't like. It doesn't even play up the emotions or really contribute any feeling to the scene. The cutting to Damien and showing his family happy then back to Oliver/Felicity I didn't like. It takes away from the what just happened. It puts the mind in a different place. Out of all the ways to "kill" her, they did it in the least dramatic way possible.
If they wanted to do the "cut to Damien" thing, I would have it where after Felicity gets shot, you see her dying on the hospital bed with Oliver looking on in horror/shock while she is being prepped for surgery. Opposite of that is Damien family preparing for Christmas with a smile on his face looking on as his daughter places the star at the top of the tree.
In the limo when Oliver was protecting Felicity they took a lot of bullets, but only when he moves and drives away is when she gets hit? Really? Just a bunch of dudes pull up and shoot it up. We don't see her even get shot. Other opportunities to kill her would have been more of a impact. Felicity behind the glass with Oliver looking on into her eyes as she succumbs to poison gas or something. Oliver getting down on one to knee to ask Felicity for her in hand marriage only for her to be shot at that very moment in front of everyone. Or Damien personally killing her.
I won't believe she is dead until I physically see her body in the casket at the grave sit being lowered down into the ground. If they just show her grave I will believe they faked her death and she is in hiding. I hope she is dead just to see Oliver be like Dark Arrow or something. I like Felicity, don't have a problem with her, but for this show to progress forward, I think her death is needed. It would push Oliver over the edge where he kills everyone in his path and allows him to reconnect with his son and former girlfriend as a way of dealing/healing with Felicity death.