...what?
You lost me when you started bashing other things besides Gary-Suether. How is the Inifnite Mansion in Mighty Avengers "overpowered"? It's still just a building, it's not like it's going to do the crime-fighting for them! It's certainly a plot device, and a convenient way for the MA to have globe-trotting adventures without having to handwave how they get everywhere so fast, but it's not "ridiculously overpowered."
And have you been paying attention to Iron Man at all? He lost his money some time ago now, and is in the process of losing his intelligence; he's lost most of it already. And even at it's peak, Tony's wealth and intelligence has never been any more excessive than Bruce Wayne's is in the DCU.
The thing about superhero comics is that they are inherently geared toward kids, and in my opinion, should be more geared toward kids, like Bone or the Harry Potter books; toned down for kids, but not dumbed down. There will always be an element of wish fulfillment in superheroes, it's been there from the start, and including it doesn't make for bad comics.
Going the extra mile and making your hero a carbon copy of yourself, only absolutly perfect and right in everything he does, that makes for bad writing.