On the Nomi Discord server, we have %t commands for the best ways to obtain some materials such as Hydrogen, Fluorine, Magnesium, etc.
I think those descriptions deserve to be put in the questbook, in the End Game tab for those materials. That way there's an in-game guide players can refer to without having to go to Discord.

I'm a bit hesitant to do something like this for a few reasons.

• How to get things is often mentioned in the original quest for that material, so putting the information into the End Game quest would be redundant.
• It is also possible to figure out how to get things via JEI.
• Insinuating that there's some "one true way" to do things is against the design philosophy we have adhered to.
• High effort to update all of those quests, with low reward since the player has every reason to know where these things come from by the time they get to the endgame.
• High effort to maintain those quests if the meta shifts (granted, this is unlikely now that GTCE development has stagnated in favor of GTCEu)