Where did all the white space go? Galleries are terrible, skins are all smashed together now making them all look bad. Give a little space, let the skin breath, its a piece of art not a brick. Haven't we learned anything from deviantart? Its great that the thumbnail is larger, but this does not require sacrificing all the white space.
Homepage layout is terrible. All that is really featured is the WindowBlinds, Icon Packager and CursorFX advertisements. Haven't we learned anything from google? Shrink down the ads, use them more effectively, be more creative. There is no longer a reason for me to go the homepage, all meaningful content is now completely overshadowed by information that doesn't apply to me (I already have these products, what do I care?). News is now buried and can no longer be read on the home page and the New, Popular, Newest and Featured skins are bench warmers that require second looks to determine that they aren't ads themselves... way too much work for me extract meaningful information out of this page. Its useless.
What happened to easy navigation? ALL meaningful links are now buried in a houdini hover menu! Again, haven't we learned anything from google? Put a simple link on the page and people will click on it. This also goes for the terrible terrible "unpinned" filter menus. Opening and closing those babies requires way too much hand eye coordination, not everyone who visits wincustomize is a video game player, some of us just enjoy good art. Again, too much work to get meaningful information, its so much easier for me to just head over here.
Based on this new design its obvious that you are not employing your incredibly talented skinners for work on the website. The last design wasn't significantly better either. Wincustomize is like an old, tattered, dated, ugly museum that stores masterpieces in a utility closet. People who are looking at fine art want a better experience, you need to up the ante, put your talented skinners to work on the website, make it beautiful and functional.