u/Frosty-Engineer-727

Today Hiyuki got released as a banner. And I pulled her and now i want to farm echos for her. I asked in the discord server "hey, does anyone know where i can get detailed map for the new area? I want to farm echos and create a route for it" and all i received as reply was that overworld echo farming is useless and is a waste of time. My question is, is overworld farming really that bad? I already farm the gladiator things, but they don't drop 3.x echos. Currently, my only choice is data merge gambling, and/or overworld farming. I already wasted like 480 waveplates on the new tacet field. But i didn't get anything useful. not a single, and i mean not even a single Glacio Damage bonus 3 cost. What should i do now? How should i farm echos if not for overworld? Not like i have 9 million wave plates or anything