Hi Will, No you haven't missed anything. It's a great idea.

So I have done exactly that. To preserve the normal new tiddler I created a new class of tiddlers 'new equation' that not only includes the launch box for the equations editor in edit mode; but, also a mini wysiwyg editor for TiddlyWikis as well.

As this focuses my mind it seems I should create a general purpose TiddlyWiki with this package integrated in it ready for use.

I think this is exactly the improved integration you had in mind, take a look. http://twmath.tiddlyspot.com/

Morris P.S. I think google-analytics seriously slows the editor down sometimes.