First thing: I use WinSCP for some time (instead of FileZilla), and I think it is fantastic FTP client.
And today I was working something on hosting with bunch of websites folders on one place, and many folders has similar names. An I got this idea: this could be useful feature:
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My graphic skills are quite poor, but you got the picture:marking folders (with color) so they could be easily distinguished in huge list of folders. This is especially useful when user needs to access some folders often, so he don't have to search it all over.
Just one of my ideas, maybe it is not very good, but there it is, I had need to share it with someone :D