It really wouldn't do much. Just getting in the right zone as the NPC for a lot of quests or qualifying for them is, by itself, not easy to accomplish if you have no general idea those quests exist.

Finding the NPC also isn't really that hard compared to the rest of the quests. Look at the description for Whence Blows the Wind:

"Your innate limits can be pushed further by collecting the crests of the Orcs, the Quadav, and the Yagudo."

Now, assuming a person is totally unfamiliar with the quest, there are at least three potential areas where where each crest can be in, if you assume it must be in an area predominately inhabited by Orcs, Quadav, and Yagudo. Even if the location was clearly marked on the map, that still doesn't help. Two areas aren't accessible without items from a mission (although you don't have to be the one that got them, but if you have help from someone with those items, they probably know how to do the quest anyways) and one area requires doing a quest that you can't get until you fail to enter the area you need to get to. Again, someone else can use their item, but it defeats the idea that someone else isn't telling them explicitly how to do the quest. This quest also requires going to a location that is specifically not placed on the map at all.

Relatively speaking, that's one of the simpler examples because at least you can somewhat infer where they are supposed to be. In the grand scheme of things, "Where's Maat" or "Maat has a quest" isn't going to help people to the point many people are going to complete the quest unassisted outside complete luck.