One topic that isn't covered with very much detail is the 3dB per octave response drop for monopole arrays. And the few online NFLA projects I've read don't mention it, either, nor mention any heroic efforts to compensate via EQ.

So here is a question: Are there mitigating circumstances that make this not so important?

(For argument sake consider a situation where 2-meter stereo line arrays were placed directly against a large wall, for example the wide wall in a normal-sized living room or such, so we are talking about pretty much the whole room being near-field for the "crucial" frequencies.)