I wouldn't be opposed to helping PC centaurs find NPC centaurs in a more limited manner. Rather than making all wilderness secret passages visible to centaurs, I might be willing to prog something that cues a PC centaur that they might want to do some investigating in a specific place.

(EDIT: Although, that said, there really isn't much of that going on. The main issue is that centaurs live in remote places, largely away from the civilized world. Sometimes they are going to be somewhat difficult to locate.)

Strange things are afoot at the Circle K.