Agent Grayson Inspiration
This episode seemed like something out of a spy movie which made me remember something which I think was a large part of the inspiration. A few years ago I was on Youtube channel called comicstorian and ran into a story called Agent Grayson, it was basically Dick Grayson as a spy who infiltrates an organization called Spyral and I think it relates heavily to this episode inspiration.
Some of the stuff I'm going to say are spoilers for Agent Grayson so here's the playlist so you can see it first if you want.
Agent Grayson Playlist

Development
Since impulse revealed Nightwing was Dick Grayson it forced development.
In hindsight the writers were probably already planning on a plot that required Dick and the team to work without masks and impulse revealing Dicks identity was a way to set up that plot, Batman may never have given dick permission to reveal who he was to the team.
Does anyone remember the scene when Artemis has her first day school at when Dick takes a picture with her and says we'll laugh about this someday?
I wonder if they did have that laugh I bet it's nearly as funny as the one about the time they decided to fake Artemis's death, that must kill at superhero parties pun intended.
I still see Artemis as Artemis and not Tigress, she'd have to be brunette for me to see her as Tigress.
Superboy was initially the angriest member of the team and liable to break things, Dick trusting him in a covert mission shows how he may not grow physically but he does mentally. He never even thought about smashing the secret door and when he was reminded of Cadmus kept it under control.

Beast Boy sounds older he's voiced by Greg Cipes now and not Logan Grove. I love Greg Cipe's voice it gives a playful theme the character known to monkey around playfully and literally. Looked like he was a TV show so did he get into acting like his mum in this universe? I remember how obsessed the teen titans Beast Boy was with TV Shows. The eagle is the American symbol so when Beast Boy turned into an eagle to scream it tells us who his main audience is even though he was talking about the kidnappings worldwide.

Agent Super Boy And Black Lightning
I really liked the sound effect when Superboy used his Super hearing to hear the four heartbeats. Black lightning cannot use his powers in a way that could hurt anyone but the can still use non-offensive powers like sensing electricity. The only way I see him getting over his block is when he is forced to use his offensive powers to protect someone

The camera's don't show their own faces instead their faces look like spirals referring to the Spyral inspiration from Agent Grayson.
Superboy Quote "now all we have to do is live to tell someone"
If Superboy was not a main character I would consider that a serious death flag if I ever heard one.
When Black lightning fell on his spine I thought he would be damn near crippled.

Perhaps Budgeting Or Time
I am not an animator but I am observant. The fight scene with Artemis/Tigress seemed very stiff not a lot of framed were used, this gave the viewer the impression that they were moving quickly and when Tigress did a flip back they used a blur effect to emphasize speed. More frames cost time and money but the would have made the fight look smoother but why waist budget and time on a petty villain. The animator or animators had to get a lot out of a limited budget or perhaps time but more frames would have made the animation look smoother.
One of the gravedigger's Tigress fights had a British accent this tells us that most if not all of the trafficking of metahumans is orchestrated by a large organisation with operatives in various countries rather than individuals and small organizations trafficking metahumans for profit.

Rescued Girl
She did not hesitate at all after a woman she does not know with a mask on and arrows offers to help her. She has some kind of advanced intuition that is a result of her powers. Her powers are light based so perhaps she is able to see the inner light or soul of sentient beings like Tigress/Artemis the Sphere who is she able to instantly connect with. If a normal person had gone through the ordeal that landed her in the grave plus the further ordeal of reviving only to have people attempt to bury them alive that person would struggle to trust anyone.
Lex Has A Plan
In Agent Grayson, we discover that the Spyral organisation is trying to create metahumans superior to the justice league and I think that's where young justice season 3 is going. Lex has intentionally backed the Justice League into a corner and he played a part in the technology Spyral uses in the comics I wouldn't be surprised if he has a hand in this he always gives you the feeling that he is behind scenes and in your face at the same time when he is portrayed well.
The Chips used to control the Meta's could be Lex's doing who else could make something that technologically advanced?
Uncle's In The Clear
We know from the cliffhanger that count Vertigo is talking to either the King or the Crowned prince because only they are addressed as your highness and the king is dead. The count alluded that the prince may be being involved with the meta trafficking when he said: "do you really know how our brother would react more people are fine with this sort of thing than you'd imagine". The uncle earned himself some credit last episode by shooting the assassin speedster in the back who was not actually faster than a speeding bullet. For two reasons I suspect the Assassin was from Bialya, first, judging by the similarities between his complexion and the complexion of the Bialya Ambassador Sumaan harjavti. Secondly, Bialya has a history of only producing a super powered individual who are wanted criminals and where would you get a meta criminal assassin somewhere that produces them.
I think it's pretty obvious that Prince Brion will get powers it seems like the doctor Jace's plan. She disobeyed Vertigo's orders and clearly has a strong connection with prince Brion. The question is how long has she been working with Simon Ecks did she pretend long enough to turn Brion into a Meta?
She's known him for a while he really trusts her and she seemed genuinely concerned, her relationship with him seems maternal.
Nap Nap
That calm relaxing music after the action makes me feel as though I'm being sedated after all this tension. It's like you should be wild about having to wait but we release 3 episodes at once so just chill.
Wally West Return Theory
Young Justice Season 3 Episode 3 Critique