I think that Brave New World sounded kind of fresh when it came out. It was again with Bruce, but the overall feel was ot comparable to previous albums with him. Now they are sticking to that formula for three albums - there is no development, and Bruce's singing is clearly uninspired and clinging to the same old melodies - a complaint I have about his recent solo stuff as well. It just sounds like old men, which is not a bad thing per se, only that in this case, it is smug and satisfied old men.
It makes me cringe when I hear people praising the new progressivity in Maiden - have they ever heard any progressive music? It is not that drawn out songs are highly; neither is the use of an orchestra.