One thing that stuck about a detail that Gilgamesh has is the Gates of Babylon. It's his ultimate technique and grab bag of weaponry that spans across PHH Heroes and Notable Figures. However the one thing that's not explained is what makes that possible.
His burial in the Euphrates River gives him this ability.
Euphrates connects to Tigris River which leads out to the Arabian Sea (furthermore into the Indian Ocean which connects to ALL oceans) this means that all weapons that great heroes have carried fall into his hands afterwards as all connects back to the Euphrates ocean.
Ea is the only known source that still eludes me due to its existence. It's the axe that severed the heavens and earth, the creation myth in the Mesopotamian era. When Gilgamesh summons it, it arrives as a unmoving bubble which he plunges his hand into in order to give Ea it's shape. Meaning that this weapon potentially also was buried with Gilgamesh in his death and is now lost to the Indian Ocean (washed out over thousands of years of erosion) meaning that the only way to give Ea shape is Gilgamesh.
So Gates of Babylon and Ea therefore cannot be replicated due to their concept and existence hinging on Gilgamesh, it was only given shape as the people who loved him buried his body underneath the largest body of water in that period to deter anyone from disturbing their king. There is technically still the "key" that unlocks Ea, but that manifestation relies on the key to the fake tomb that was lost once it was found during the Egyptian Era.
Given that a river leading into the ocean is a vast limitless space, it can hold multiple weapons. A vast space probably as deep as the Marianas Trench filled with the history of all PHH history.
I did 100% mean to send that to you. What happened was seeing so many of Nasu and Takeuchi's decisions lined up made me realize wow, these two literally never get told no except Nasu from Sakurai every once in a blue moon. Its literally two yesmen acting like we have consulted the team on this one when the team is the two of them.
well yeah, that's practically the issue in whole. look, nasu and takeuchi singlehandedly caused type moon to exist, i'm not against them having a big influence on the directions their games and stories take. they are the creators after all.
the issue is in my opinion that they have way too much influence, specifically takeuchi
this is me going on on a tangent so apologies anon, if you want the entire rant it's under the cut
but basically tl;dr: nasu and takeuchi fail to realise that type moon is a way bigger company than just the two of them. and since no one (fans or tm members) really directly opposes their whims they get to continue doing whatever they want, even if it directly goes against their writers and fanbases wishes.
just to recall, some of the worst tm decisions were caused by what? takeuchis whims (and nasu's, but mainly takeuchi). wu zetian as a child? takeuchi wanted it. young moriarty in traum? takeuchi wanted it. summer beast eresh for anniversary, ciel for summer? takeuchi&nasu wanted it ("thought it fit better"). aesc as anniversary unit? takeuchi wanted it. lb6 summer? nasu & takeuchi wanted it. oh and if we get camazotz? well, takeuchi wants it.
the issue isn't even that they indulge in what they like, it's that they don't give a single fuck about their actual fanbase or writers goals (and why should they, they get money and praise either way most of the time).
type moon grew into quite the company, fgo is unironically one of genshins/honkais best gacha competitors despite it's outdated playstyle. however as you put it, "the team is the two of them". nasu and takeuchi seemingly forget that type moon isn't just nasu and takeuchi anymore, but many writers, developers, artists and a big fanbase alltogether
in regards to your previous ask, if anything that shows to me that nasu is a pretty happy dude. he earns a lot of money, gets admired&praised by many people, is famous in the vn scene w/o anyone knowing his real identity. he gets to do whatever he and his bestie want without too much pushback and gets to see whatever he wants to happen in fate's stories.
hell, we only got fate/samurai remnant because the guy in charge fangirled over nasu and musashi hard enough to convince nasu to let them make a game. and even then, nasu had to "lay down the groundworks" before the actual writers team could write f/sr.
-> since in nasu's mind, tm lore is at such a level that outsiders would have to make way too much research to create actual new stories. (read both of this in an interview translation, i can find them again but it'd take a bit) imo it's a little arrogant, sure tm lore is very extensive but you don't need to know every single piece of it's lore for one story. but that's just my opinion.
so in conclusion: yeah, i entirely agree with you. since they get to do whatever they want and get money for it, of course they continue doing whatever they want. gotta hand it to sakurai for trying to push back a little though. and i wonder how much longer they get to do that. type moon's biggest winning quality has always been their loyal fanbase, supporting them so much so that fgo as a gacha gets to keep up with hoyoverse gachas of all things. and said loyal fanbase seems to slowly get more frustrated too with each whimsical decision