Check for Errors
I hadn't been to the site in months but since last week I've been solving and love the new format. The major overhaul reminds me of the improvement a few years ago for Cryptograms. It's awesome! My scores are lower because I'm rusty and using the largest grids, but I also use the check for errors feature and when there are no errors there's no penalty. As others have said, it's a great time-saver, but personally I'm very glad there's no points penalty when the grid is correct.
I'm amazed at some of the very high scores and quite impressed. There are some really talented people here!!