Well this is a good 'un rumbling... It's harder for me to compere the old films and the new because I started reading Batman/Detective comics in the 90s. U guys should also mention the man who created the sets and structual design of the city in the 89 film, Anton something. Sorry I can't remember the name but he did some design work for the comics too, before sadly comitting suicide.
When u mention the homages in the first Batman, i'm not sure... watched it again last nite, last 20 mins. The bit with the bat-plane and the moon? nothing to do with ET, sorry, I grew up thinking of it as a clever reference to the actual bat-signal, the plane enRAB up making one, you see...