Is this a viable chess opening? (Part 2)

It controls (D4), (D5), (E4), & (E5), and controls twelve spaces in enemy territory.
Every piece is defended in the position, and it has a very defensive transitional phase on the move 8: > (N|B1) -> (N|D2)
I added it in because if the opponent manages to shut down the larger formation, white has an extremely well protected defensive position.
Although it probably isn't my place to say this to a player who's a higher elo than me.
It takes 15 turns to get there and doesn't factor in for anything your opponent might be doing. It is passive, doesn't develop pieces quickly, and the symmetry is not going to do anything to help. I'm not a strong player, but I think focusing on an opening system is probably the worst thing you can possibly do at your Elo rating. Someone playing basic opening principles against you will take up more space faster. They are going to force you in to a midgame before your pieces are developed, while you have wasted your time making multiple moves to maintain irrelevant symmetry. It looks like you're keeping your pieces safe, but that's because they aren't under attack. If you want to play a "system" with white, the London is much faster than that and will give you a much better position. But usually only the first 3-4 moves are pure rote in most situations.

I do play the london sometimes, & it's probably one of my favorite openings. But, I have always enjoyed playing chess & making “megastructures”, because of their versatility & relative ease of creation.
But thank you for teaching me that openings that are the same, no matter what your opponents play, is called a “system”. I really like that name :).
Also, as I said above, there is a defensive phase that, whilst adds more time, can work quite well as an opening on its own.
I think that the OP is overly fixated on openings here. They are completely irrelevant at their level of play when every third move it so is blunder or a mistake.
At the level I play at (1300ish daily) I feel that I generally understand the reasons I play a move. They may be somewhat misguided at times, or I may miss on better plans. I know very few openings past 4-5 moves or so and don't feel that it is holding me back, as long as I don't fall to an unidentified trap.
What you're identifying as a "defensive phase" like to me more like a "ceding your initiative to your opponent" phase. Understand that you are playing against players at a similar Elo rating. If you think it's working for you, understand that someone at my modest skill level will beat you basically 100% of the time... In fact, I'd beat someone 95% of the time who would beat you 95% of the time. And there are a bunch of people here that would beat me 95-98% of the time, too.
OP, if you want to challenge me to an unrated daily game or three I'd be happy to comment in the chat why I am making the moves I make. It may help you develop your skills. I believe that less misguided focus on your openings will do a lot to help your chess.

True.
Very true. It doesn't really work too well after playing against some friends in person, so yeah.
I watch a lot of chess vids, so i'm reasonably certain I know how to avoid blunders, but that's about it for strategy.
Oh well. I did get what I wanted though: an answer.
Thank you!

System opening doesn't mean: "play against anything" it means "play against anything and get a playable position!" For example, I can say I play a system opening with: 1.f4 2.g4 3.h4 4.Nh3 and yet if my opponent plays 1.f4 e6 2.g4 Qh4# the game is over!! So you can't just call your opening a system because you try and play the same moves. Your idea for development is to play e3 and d3 and get bishops to long diagonals in two moves without moving the knight pawn. The problem is it just doesn't work if Black advances his center pawns: 1.e3 e5 2.d3 d5 3.Be2 f5 4.Bf3? e4 with advantage to Black. Should White resign? Not yet...but soon :)
My opening modified to be better.