Oh, I can relate! When I saw that notice, I panicked, and started redesigning the blogger blogs with the new template. Which meant that a lot of stuff in the sidebars had to be resized!Good luck, and I hope you find a template you like. I haven't tried anything by the "picture window" template, and I ended up doing three columns, even though it meant resizing everything.
Due to a recent large amount of spam comments I have decided to start comment moderation. I love comments so please leave them.