I believe demand for these schematics have dropped whilst supply of them have increased, and it has become more alternative options for the items that schematics is for, which made most schematics less viable, which is probably why people would be looking for overkill schematics. But I agree, there should be more viable schematics and ways to reverse engineer into better ones. Perhaps they seem a bit outdated, from treasure hunting and underworld trading I can earn probably more by doing lower level missions, as the schematics do not follow a linear level from 1-9 in how much they are worth or how useful they are and the lv 65 ones are not necessarily good, same goes for rare materials. But I think schematics would then have to be updated with more viable options, and not the same old mounts that everyone have for example, which is obviously worth nothing because most people have had them for years.