Early on I wrote a script for Chrome and Firefox (with the Greasemonkey extension installed) which fixes the wishlist.
I finally got tired of the tabbed behavior of the item pages, and fixed that; I’ve updated the script to do both things now.
It’s available at http://userscripts.org/scripts/show/133738. I’ve attached a before and after picture, so you can see what it does. (I’ve resized them to 700px wide, as per forum rules.)
I hope this makes life a little easier for other folks; remember, you have to be running Chrome or Firefox (with Greasemonkey if Firefox) to use the script.