It's because this isn't a sophisticated user(s) that we need certain features such as the ability to sense the theme so you get a WYSWIG editing experience that picks up the sites CSS.. and it needs to do multiple accounts. Other than those two features we only need the standard editing tools, ability to hyperlink, add music, videos, images..
Mars2edit didn't work for them and either did Wordpress. Finally the main client went and purchased a Zen notebook and is very pleased using WLW. We still have a few blog users on Mac's who don't want to drop $1000 on a notebook just for blogging, so if anyone knows a blog editor that picks up themes and supports multiple accounts please share.