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My two icon font sets (a generic set and a complementary set for app designers) have been hinted using Font Squirrel's algorithm. You may find these of some use: http://www.heydonworks.com/article/an-app-icon-font
What is a style "applied directly" to an element if not a class? It's written on the element itself.
'Classitis' is certainly not a concern for parsers because they do not know it is going on. Then again, that's my point.
Read my comments for the original article carefully. Projects are made easier to maintain by foregoing classes.
Element names belong to a shared lexicon which all developers and sufficiently up-to-date parsers understand. Classes are invented per project. They are a superimposition. They muddy the water.
Ancestry driven selectors are the essence of CSS. Classes are a cludge.
It's not my website.
When the HTML structure changes, the CSS changes in accordance. That is what is supposed to happen. You do not understand the technology.
HTML itself is scalable and my method is sympathetic to HTML. Scalability is a non-issue.