Melakon wrote:

I've not seen the Klingon Forehead Arc, but the show hogtied itself putting a bumpy Klingon in "Broken Bow" in the first place. If they'd started with smoothies, there would have been no need to explain STTMP Klingons,
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The Klingon arc wasn't presented because of a "need" to explain anything. They were presented as another in a series of season 4 stories which dealt with the origins of many things Trek fans take for granted about the Trekverse. Ent was a prequel after all. I thought most aspects of the arc were great and the presentation of the forehead pretty well thought out and plausible.
But, I forget. You are likely among the fans who identify prequel stuff as "fanwank" and therefore, unwanted, right?