Hi Sue!
My issue with the series was that the feel of Masters of the Air was different. It has been a while since I've seen them, admittedly, but Band of Brothers and The Pacific, especially Band of Brothers, felt less dramatized than this did. Too much of it - the dialogue, the way it was shown on screen, the actions, felt that it was more for dramatic effect rather than just 'telling the tale'. This just felt less subtle than the previous series.
Now, I suspect if I go back and watch those series again, I'm sure I will find evidence of dramatization, cliched characters and dodgy dialogue onscreen - but I was surprised at how much more to me Masters of the Air felt like a drama than previous. Was it because we were focused on a smaller group of people this time around? Possibly.
I'm not saying I didn't enjoy it - I did, a lot - but it just felt more contrived than the previous two series. And that surprised me.