That would be great I agree. I use Movable Type to make my image posts as it uploads a photo I pick, makes the thumb to specified size, then creates a popup html page, and inserts the code into the page. 3 clicks.
Results in a thumb in article which opens up a popup that looks great as it is an html page.Also has the option to just copy and paste the code. Uses ImageMagick.
I like wordpress, but image upload could use lessons from MT. Lets hack it lol