the wyswi editor make unwanted change in the code..
now i add js css to article, but if use tinyeditor, the js code will missing
but if you add js,css to the article,it will light
because if add js,css to the header ,the total web site header will heavy, load slowly!
this idea, i agree it! please add it, it's important.
There are modules that you can add php and set in a position in an article already..
css - add to your css file and use the drop downs in the article,
there are some plugins that does do this..
but would be better that joomla has this..