The part you pointed out as not-great in WTWWB is my favorite part lolI think Sign of the Cross > Greater Good of Good. Both fantastic Harris tunes with similar atmosphere, but SOTC wins out for me.
I don't think Harris is losing his touch, but I agree that Wild Wind and TRATB both have some parts that could have been tightened, shortened or removed. Wild Wind is absolutely fantastic until the last part ("They make a tea and sit there waiting...") when the words are nice but the music plodding and Bruce kinda just talks over it. TRATB verse melody everyone knows about - I like it but Bruce cannot lock into the music, no matter how much he tries.
BUT I'm massively excited that this is the biggest 'solo' Harris contribution since the 90s!!!
I know people wank themselves silly over Bruce and/or Adrian, but I though Empire of Clouds was boring as hell and both Death or Glory and Speed of Light very average. When I listen to Maiden I actually want the Harris sound and feel, not Bruce and H trying to mimic it.