It doesn't work like that.
Going far enough in the lores to outshine the Eclipse is not something we can do as it gives Celestia lantern to see us with.
And even if we did Eclipse would still be in charge of special lore area's.
It's their purview not ours.
Do you really think for example that the Eclipse could take over investigating Changelings? No, because that's the Luns Bureau purview.
Velvet has a job and she is busy doing that job. The Luna Bureau has a job and they are busy doing that job.
Why in the world would Celestia add another full time job when she already has the Eclipse?
I'm not seeing your logic here?
My logic is that compartmentalization is a sword that cuts both ways.
Velvet Covers, as I've said many times, knows nothing of Eclipse's role or activities beyond their supply of the definitively useless Candle Dust. As far as
Velvet Covers knows Equestria has no organization dedicated to the Lores and the Mansus. At this point in time Celestia is in reclusion and we have been reporting to Cadance, insofar as we report to anyone really,
Velvet Covers has no reason to share knowledge of the Lores with anyone outside of the Bureau at this time.
Eclipse is in its own little black box, we're in ours, and if we both happened to be pursuing the same research, well that would be just terrible.
What I've been saying this whole time is that it's better to ask forgiveness than permission, especially since we can just say we asked Cadance and she approved it. We don't have to rope Eclipse in on anything, anymore than they rope us in, and
investigating unknown/unseen enemies is very much our purview. Therefore we just go for it, and if/when it gets noticed we apply a princess-backed "well you never asked." At which point in time we will have a comprehensive understanding of the entire spectrum of Lores, along with various artifacts, rituals, reagents, and maps of the lower Mansus, all of which would add up to a picture of organizational competence. And before you ask, we would not be able to simply chuck it all over to Eclipse because we'd make the very sensible argument that our achievements are the work of the dedicated ponies of the Lunar Bureau, striving to uphold the ideals of Princess Luna as espoused in our founding.
I'll admit, I wouldn't be pushing this so hard if we didn't just get a chance at a huge loyalty boost, but since we have it we can afford more audacity. Luna's getting restive/curious about what the Lores actually are, I'd say we explain it to her along with Cadance and Shining, then we use their endorsement along with this approval boost to start bringing our top ponies on board our "conspiracy". I'd honestly love to send ourselves along to Tall Tale after that discussion and apply the Lores a bit more visibly during the expedition to prove our point. Any loot would be a tidy little nest egg to get the Bureau started and as the Commissioner we'd have access to any and all books etcetera. Y'know, if we were inclined to study summat...
Old Cult was NOT capable of doing that. Jade is not capable of doing that.
If we could have the Bureau eventually do that, then the obvious question is why can't Jade or Baldomare?
You tell me, why
can't they do that? Are we meant to believe that those artifacts we looted from Copper's cult were just pretty decorations that she had no idea how to use? Mechanically restricting the study of artifacts to Velvet alone has resulted in a big pile of unstudied artifacts.