First off, I LOVE WordPress. I've been using various CMS' over the years (Blogger, Greymatter, etc.) and WordPress is utterly fantastic and I applaud the people who put effort into making it better. You guys seriously rock.
I'd like to see future versions of WordPress take into account users who do the same thing, the same way, every time, and want to save those preferences.
For instance, I size my images offline to fit on my blog properly (www.jasondunn.com). So when I upload a 500px wide image, that's what I want to put into my post. But I have to click twice, every single time, to tell WordPress that I want the full-sized image in there, and no, I don't want it to link to anything. Then I have to bring up the image properties window and set border=1. It would be AMAZING if I could have all those things saved as my own personal preferences.
There are other, smaller things in the same vein - I always want external links to open in a new window/tab (_blank) so why not save that preference as well?