respectful to the original material?
^^^ I'm not sure I understand what you mean... is there a particular moment that you felt was contradictory to the comics??? Keep in mind that it was a reinterpretation of the source material, changed for modernization, intended audience and to add a sense of reality (as opposed to making it about "superheroes" as was the original comic). I don't see how the show was disrespectful to the source material if that's what you are inferring.
...I don't think you can recognize it as being respectful to the source when it's a reimagining of it.
when did this happen?The Brotherhood joining S.H.I.E.L.D.
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^In the series' final moments. The Brotherhood (Pyro, Toad, Blob, Quicksilver, Avalanche & Wanda) stand in a federal office, with the emblem of "Freedom Force" behind them.
Marvel-powered Rogue.