I linked to both the tweets from Crawford and a complete LONG interview with Crawford on this subject. You're free to disagree with him of course, but it's not like I can argue it better than the guy who wrote the rules!
I am not arguing the rogue is still unseen after he attacks (I don't know why people keep claiming that's my position but it's not). I am saying you remain hidden until after your attack from hiding is resolved as either a hit or miss. That is the rule. Crawford goes to great lengths to state that over and over again in many ways. Just listen to his interview.
It's not "my" interpretation. It's definitely the official WOTC ruling on the question.
As for Skulker it let's you REMAIN hidden if you miss, it let's you hide in lightly obscured which includes dim light which means you can hide in plain sight from a creature using their darkvision to see, and it let's you see with darkvision without a penalty. It's a powerful feat, but it doesn't have anything to do with the fact that WOTC says you can attack at range from hiding and you only lose the hidden condition AFTER your attack either hits or misses.
I am not saying you claim that he is unseen after the attack, I am saying that you claim the Rogue is hidden while he is in plain view of his enemy. The attack is irrelevant to what I am talking about. It doesn't matter whether he sticks his head out and throws a dagger or if he sticks his head out for some other reason, once he sticks his head out he is no longer hidden and if that happens before he throws a dagger he does not have advantage on the throw.
Crawford goes to great lengths to say exactly what I am saying. I listened to them and nothing in there that suggested what you say. Their logic and reason is consistent with the rules and what I have said above on this thread. It is inconsistent with what you are saying. They even used the same example of being behind a bush and being able to make an attack while hidden!
From the link you posted he said exactly what I said:
Crawford - Shooting FROM COVER and running out into the open aren't the same thing..
Cover is defined on p196 of the PHB: A target has total cover if it is COMPLETELY CONCEALED by an obstacle. He is saying the same thing I am, come out from behind cover and you are not hidden! Shoot from cover and you are. Sticking your head and arm out means you are not "completely concealed" and not "shooting from cover".
Some specific points from the second audio you posted that support my position:
1. around 35:00 "Invisibility means you can't be seen, you can be screaming your lungs out but if you are invisible you are unseen."
2. 36:00 "going back to stealth in combat .... there are CIRCUMSTANCES where you can hide in combat, invisibility being one of them ... one of the basic actions in combat is hide and we expect people to hide in combat but you still have to follow the normal rules, when you try to hide you need to hide someplace WHERE PEOPLE CAN'T SEE YOU CLEARLY and then you need to keep quiet.... 37:19 hidden means you are UNSEEN and unheard ... 39:01 you get advantage if you fire FROM WHERE YOU ARE HIDING
(this means fire from behind the wall in the example we are using, not move out from hiding and then fire) .... 39:40 It does not mean, let's say you ran and hid behind some boulder, you made a solid stealth check and you decide I want to run out and stab that guy in the back .... you do not get advantage ... you revealed your location when you went out into the open ... 40:25 THE BENEFIT OF BEING HIDDEN DOES NOT STICK WITH YOU UP TO A HIT OR MISS IF YOU BASICALLY INVALIDATED BEING HIDDEN BEFORE YOU EVEN MAKE THE ATTACK ROLL ... ranged attackers in particular can often gain the advantage of being hidden because they can make their attack FROM THE PLACE THEY ARE HIDING OUT, in the heavy foilage, up in the treetops .... 41:21 a melee character can benefit too if they can make the attack FROM THE PLACE WHERE THEY ARE HIDING .. . 41:30 to really drill into the heart of the rule; if you are hidden and can make the attack FROM THE PLACE WHERE YOU ARE HIDDEN"
They are saying the same thing I am. If you can fire from your hidden location you get advantage, if you have to go out from behind cover to fire you don't.
Regarding skulker - maintain hidden is only one feature and not the one I was talking about. Darkvision has nothing to do with the second part. Darkvision turns dim light into bright light and darkness into dim light within a certain range but has nothing to do with this feat. Yes using the feat a character can hide in darkness against a creatue with darkvision, within the darkvision range with nothing else obscuiring him. What it really means is he can hide in dim light when he is not obscured (whether the enemy has darkvision or not) which is completely superfolous if you believe any character can be hidden without being obscured. But you are saying above that anyone can be hidden in suich a condition until they attack, meaning that second part is useless as a feat because everyone can do it.