Sorry, I'm having a little difficulty understanding what you mean by loud and "loudness war effect". I guess you mean that the skill sets have too much diversity, and there isn't a solid theme?
I originally brought up the loudness analogy to illustrate the point (perhaps poorly) of predominantly nerfing but also occasionally buffing every skill and ability to have the same power: it felt to me that there was a risk of an unyielding wall of skills that had no discernible difference between them and that gameplay might suffer in the same way that recordings often do with the sort of unyielding music equalisation where any interest offered by variously louder and quieter parts is removed.
Possibly not the greatest analogy ever, but it seems my wont to go on somewhat erratic and whimsical tangents.