Actually, I think this is a great idea. It will prompt exploration in the process of finding these masters and very possibly allow folks to find hidden caves and coves too. I know that there is a large hidden cave high up on a mountain side because when Noobtaco took me on my run to get my dragon glyphs, we saw it.
World of Warcraft: Dragonflight has hidden profession masters across the Dragon Isles which reward players who find them. These profession masters can give World of Warcraft players some awesome boosts to their professions if they speak with the hidden NPCs.
https://gamerant.com/world-of-warcraft-dragonflight-hidden-profession-masters-knowledge-mettle/