By "archive," I was referring to the temple. And you are arguing that nothing, not the beacon, not the numerous artifacts stashed away in that temple, could have helped in any way before then. Even though we've spent weeks in the narrative hauling ass to the far ends of the galaxy in search of anything with Prothean writing on it to assist with the Crucible project. Keep telling yourself that.
I haven't "made up" anything. Shiala has the cipher, and is capable of sharing it with others. We had an opportunity to pick her up on Feros much, much earlier, but didn't (a very stupid move we, the player, are granted no control over). These are uncontested facts in the narrative. If EDI says that Shepard is the only one with the Cipher, the only one who could have helped, she's either wrong, pacifying the grief-stricken Shadow Broker with a comforting lie, or the writers ignored it - none of which erases this fact. It's no more complicated than that. Frankly, for all the field use he sees in my typical playthrough, I'd have liked the option to send Javik off to the Crucible.
Activated or not, the Asari were clearly able to derive information from the beacon. Every single squadmate you bring to the temple makes this observation. You can't argue it would have been useless when they've already done quite well for themselves by making use of it. They didn't withhold it because it was useless; they withheld it because it would be a huge scandal to reveal they were hoarding Prothean tech to themselves, a practice they outlawed for everyone else. We can call out just about every politician in the game for their bullshit, so why are the Asari exempt? EmoShep whines that "Thessia fell, and That's On Me!"
Why does Shepard claim personal responsibility for the fall of Thessia (which fell before we even got there), potentially after callously brushing off the genocides of four other species for which (s)he actually was responsible?
I'd recommend you read Crutch's post too.
The only reason the beacon's location had been covered up was because the politicians wanted the rest of the galaxy to believe the Asari developed their technology on their own without the aid of a Prothean beacon. Every civilization was about at the same tech level. The Turians were at the same tech level as the Asari, as were the Salarians. And now Earth was closing in fast as well before the war because of the Mars Archives.
It's the writing. It could have been the archives the Turians found that jumped them ahead. The existence of Vendetta and its location along with Cerberus knowing about it was a plot ass pull. There was absolutely no foreshadowing that it was on Thessia. There were no clues. Suddenly the Asari councilor shows up and tells us about "there is an archive on Thessia you should look at." Then you get there and Cerberus is there ahead of you in the middle of a reaper invasion.
Why wasn't it on Sur'Kesh? Or Palaven? The only reason it wasn't is because you hadn't been to Thessia. What if Valern had contacted you and said, "we have an archive you should look at." Or Victus said "We have an archive you should look at. Maybe it might contain some clues to the Crucible." You get my point? It could have been anywhere. It wasn't foreshadowed. It was an ass pull. And if it had been on any of those other worlds, Cerberus would have been there.... "From the Mars archives, or did your Shadow Broker miss that one?"
The Salarians didn't supply any effort to the fight unless you sabotaged the genophage. They sat out. And the Asari get all the blame?
I keep saying: EDI held out on you. She didn't think it was important.
I think they got to Thessia and they were writing the conversation and went "Oh s***! How did TIM find out?"
"Udina's office?"
"No, they swept it for bugs."
"That leaves the Mars Archives."
"But what about Eva Core? Wouldn't EDI have..."
"Shut up, no one will think about that. Blame Liara in the conversation, and people will blame the Asari for hiding it. Everyone will forget that the Salarians aren't doing s*** for the war effort."
"Perfect!"
Evil will always triumph over good because good is dumb.
Remind me to find the .ogg file for Shepard after Thessia and put my own voice in there saying "F***!" instead of "I'm sorry, we lost Thessia."