I came up with a solution on how to make categories in stacey.
We will need next structure
Folder with thumbs /article-thumbs/ it will contain .ie 1.articlename, 2.articlename and categories like "web-design/ that is going to duplicate referring articles. As thumbs are small it is not generating any big issues.
Then we have folder with articles-files/ which contains 1.articlename
And we generate for thumbs links ../projects/@slug - connecting thumbs to their open view and this way we can have as many categories as you want.
See example here link for page I've used this method