I find it very annoying that I cannot filter results better, and my browser hangs waiting for a page of results to display. I was always very annoyed with pilot that I could not specify to search ONLY the births or ONLY the deaths in civil registration, I ended up with both. At least they now demarcate what were the better matches and which ones didn't quite make the grade.
On pilot, the results were better formatted. A field label marked with a colon and then the value. Now it's just the field label, a tab, and then the value. In a letter to GRO that looks very sloppy. I do a heck of a lot more formatting of results now.