Thank you very much for the compliment.
Most of the wallpapers I use have already been resized for the Galaxy Nexus. I have a collection (most I haven't used), that you can find
here. However in some cases, I will have the wallpaper resized for a non-scrolling single page. This is usually because the original does scale properly.
As for the softkeys, these are changeable via an option in the AOKP rom. I just have to upload the image to my phone and replace the softkey. It's much easier than making a flashable zip.
I hope this helps. If you have any other questions, feel free to send me a PM.