I think I would only find alternative history interesting if the anchor clearly knows that part of history extremely well, and had researched the customs, the personalities, the language, the detailed politics, and the means and skillsets available to people of that time, very very thoroughly, and constructs his alternative history by plausibly changing just one event or decision.
In other words there are relatively few periods in history where the level of detail is even known to us in sufficient detail for it to be possible to constructi an interesting alternative history.
One such period might be 1st century Rome, for example what if Varius was not defeated in Toutenberg forest.
In other words there are relatively few periods in history where the level of detail is even known to us in sufficient detail for it to be possible to constructi an interesting alternative history.
One such period might be 1st century Rome, for example what if Varius was not defeated in Toutenberg forest.