There shouldn't be proto-anything dropping in normals. If you want prototype salvage, run an elite. The spaces ones really aren't that difficult.
It isn't about difficulty ratings, it is about simplifying an overly convoluted and complicated currency and risk vs reward system.
There is no logical reasoning for keeping Normal at a sup-par currency / reward scheme if Elite is worthwhile for those interested and capable of doing it. And neither is normal gimped in comparison for those whom are only interested or capable of doing normal mode.