Great! :) One thing I changed that you cannot undo with a setting right now is that I increased the minimum width of columns from 300 to 400 pixels, with 300 it was just too small to show the thumbnail next to the post title. I might actually change that back to 300 for the big picture version, there it doesn't matter and then you might be able to display one more column on the screen.
RE: Columns for Steem Update - Moving columns, preview images, bugfixes