I personally don't think Reapers needed any nerf. The reason everyone started playing Reapers is cause I rolled one, and literally raped everyone, but their WS or chance to hit suck.
They also only have 5 styles, nerfing their only 5 styles is like killing the class. Then, they get OOE with 4 hits, especially with their WS, it's easy to miss your hits, and get OOE very quickly.