Can't get it to work.

I try putting the shortcode, but nothing shows up on the site. It’d be much better if you included a gui for adding galleries. For example, add a button to the post edit screen (the kitchen sink) or a button next to the “Add Media” button, or add a GUI inside the “Add Media” window. The result would be that the shortcode gets generated and added automatically, so it’s easy for my Grandma to use.

EDIT: Wait nevermind, it took a while for it to appear on the page for some reason…

Anyways, about the image sizing… You can use JavaScript to make sure the images fit in one area (i.e. make a “crop” effect). It’s not hard!