@webdeersign must be busy with his RapidWeaver stuff.
Yes I also remember the boat load comment. Blocs 4 certainly improved things, was the class editor actually redesigned or just improved further with additional features?
Good to hear it will continue to get more things for all users to visually manipulate.
How does that differ from what issues a person can also unwittingly introduce to the app by dumping CSS into the Page Settings > Custom Code, with malformed input. What checks for human error does it have?
Maybe such a feature within the Class Editor could have two tabs in the input area. One as shown above to just dump in CSS for those in the know. But another for beginners to [+] add properties and values pairings line by line, with Intellisense checking to ensure they are correct. 
Anyway doesn’t sound like this feature is gonna happen. So we’ll have to wait to see what other CSS properties will get included visually with the Class Editor. The boat load comment was a while ago and based upon users comments throughout the forum we are not quite there, yet.