About the Phoneglyphs:
Could Robin during the timeskip (Or Right Now via Clones) go throught the world and found all of them, except those in the new world?
We have seen her come in contact with Ohara's, Alabasta's, Skypea's (Trully Jaja's), Fishman Island's and one more during her Eines Loby Flashback
The Phoneglyph have hints to the directions of the next one? If so, with Dragon's Inteligence Network, Resources and her own Knowledge, she could have gotten to them relatively easy.
How many of them the World Goverment has managed to move to a safe location/the bottom of the sea? How readable is the True History without the pieces?
The topics that we know they talk about are:
The nature, location and purpose of the (Known) ancient weapons. Robin expressed frustration to this when she found Skypea's Phoneglyph, so we can asume that by this point she already had information for Uranus and Pluto.
The will of D. Roger and Whitebeard's talk on that place with all the pink flowers
The Void Century and The name of the WG original form. Dr. Clover's information, could be formed by multiple Phoneglyphs read.
Joy Boy's Apology and Noah's purpose
What other things could they hold, that are more dangerous than what the Oharan Archeologist Knew and the ancient weapons?
How much second hand information does Robin hold? Did she knew what Clover knew? Was that information reliable? There are other sources that were exterminated with the same violence, but more cleanly and discrete that Ohara?
Who wrote them? What were their intentions? What was written is reliable? At wich point of the story or the war were they written?
The purpose of this post is to try and sum up what we know about the Phoneglyph and try to predict from the questions that their existence brings, which ones will be answered.
Other than the mundane: How the Phoneglyps were made? What are they made from? How did the Oharan Archeologist manage to translate it? Are they trully indestructable? How much do they weight?