1. I would be great if you could set WinSCP to open up a connection in a maximized window. It's a small feature but I would personally find it quite useful as I deal with directories with lots of files and find I always have to manually maximize the pretty tiny window.
2. Using the Norton Commander interface you can sort by the "Type" column in the local view but that column doesn’t exist in the remote view. You can go to Remote -> Sort -> By Extension which works, but from a workflow perspective (I’m a web designer who constantly has to update only certain kinds of files) it would be handy having its own column in the remote view.
I have a few more but I won’t overstay my welcome in this post *lol*