I'm not defending everything that Maiden do, I'm challenging the idea that the reason people aren't getting the sound on albums that they imagine would sound great, is not because of some moral failing from Maiden, but because Maiden don't want to sound the way some fans want them to..
I personally would prefer a Powerslave/Seventh Son sound, but if it's a choice between sounding like Maiden do now, or a Sneap or Accept/Saxon generic sound then I'll pick Maiden's current sound because while it's not perfect at least they sound original.