The mention of documentaries brings this to mind (https://en.wikipedia.org/wiki/C.S.A.:_The_Confederate_States_of_America), and questions as to how such a style (serious or spoof) might work in terms of audience appeal
From what I learned at TV school? Poorly. The entire reason the History Channel died in '04 was because the documentaries market hit saturation and started shrinking, and the market they targeted went poof. A mockumentary might work, but you still need to get a director with a solid feel for the narrative and visual elements you're selling, and we're right back to the Battleship Equation on the topic of TV: Visuals, writing, accuracy: pick two.