[SPOILER] Season 4, and "who's in the grave" theory

After watching the first crossover episode - Legends of Today, i just wanna share my personal theory about the whole Season4 and the "Who's in the grave" thing.

We see Oliver in a suit standing there (which probably indicates that the funeral was recently, so like hours or minutes before), also Barry (Flash) shows up saying that he's sorry for not coming on time, so its someone who Barry knew. Talking about the responsibilty stuff and that he's gonna kill the one who did this, next up Barry leaves and Oli's trying to hold up the tears, which means it's someone who was very close to him. From this scene I'd say, for me, it's definitely not Felicity. She's one of the closest friends to Barry and "to-be" fiancee to Oliver, so i would expect more emotions from both. I mean if ur love dies u aint gonna hold the emotions back like that, or, in Barry's case, miss the funeral, and show up just to ask Oliver how he's doing and what he's going to do. // (I don't know much about Religions, but if Felicity is jewish, wouldnt it be somewhat different ?) // Beside all that she's a member from the original "Team Arrow", Arrow wouldnt be Arrow anymore. This also applies to Dig, and it would be a "more memorable funeral" (with the Flags,and soo..., he was an Army guy), so I'd say he's definetly not. Laurel, maaah, she neither. Just doesnt fit in all this. Same like Cpt Lance, Oli would not cry like that, its like in Dig's case he was a Cpt after all. But I am somewhat sure, that he will die in this Season with all the stuff thats going on with Damien Darhk. I like Lance as a character, it's not the same without him, but the episodes slowly indicate that he's gonna die. Like Tommy or Moira in S1 and S2. You get slowly the feeling, eerm something's gonna happen with him/her. I thought that Moira would die in S1, but it catched Tommy first because of his love to Laurel, but it catched her in S2. The only left from the closer ones is Thea, which I think can be, with her Bloodlust thingy, it would somehow explain just Oli there left, like he could prevent that from happening, or was it his fault so its just him left, and Barry don't wanted to talk about that what possibly happened. Also Roy is coming back, maybe for that occasion. It can be, but less likely. The one left, which both Oli & Barry knew, its the mother of Oli's son. It explains why he's alone stading there, talking about responsibilities. Like he should have done more, he cant hold his tears because its the mother of his son. Are they alone there because no one other from the Team knew about her ? We will see, but i think its her. Beside all the Darkh stuff going on, the next important story in this Season is the relationship with Felicity, thats the thing that's in focus if not Darhk. Like maybe this "Son thing" changes them completely, they seperate from each other, so they can't work together anymore, she leaves and gets kidnapped by Darhk by the end of S4, and TeamArrow saves her, they married blabla... can happen. Or maybe Darhk is her Father, so that changes a lot of things. We will see, but i dont think that Felicity dies, because the Season is all about their relationship.

let me know what u think, my friends dont watch this so i wanted to share it with someone ( english is not my native language, so excuse the mistakes if there are any :D )