Well, I know it's not
totally bad, because - after all - it's derived mostly from real-life situations and plans (so
no Somali carrier battle groups or Nepalese tank armies
). Problem is that I want to use many elements that while may not be totally implausible when taken out of context by themselves, in the broader picture will be often in conflict with some others (like UK using
both Skybolt and Polaris as well as TSR.2 and Tornado - to name just such examples) - and that rather wouldn't be so awesome to some readers.
As for the entertaining part, I'm not planning to have much narration at all - I'm just too painfully aware that there would be too much opportunity for self-contradictions, continuity holes and other illogicalities. I'm thinking rather about something along the lines of The Military Balance yearbooks (rather their older format, though), although not year-by-year, but just for several select years (at about decade intervals).
There's nothing wrong with using an "invented" landmass for AU. Existence of some particular landmass may have certain influence on "world history" in certain circumstances, which should be taken into account if the AU is to remain plausible, but that's all. Unless You're giving detailed descriptions of the processes that led to creation of that particular landmass millions of years ago (that may turn out to be scientifically impossible), then it's something that could be only taken at face-value - lands simply
are.