I want to say that this is the best syntax highlighting plugin I have found and very diverse.
One feature that I would suggest is to have on option to allow for the articles to support highlighting for the same languages as that in the IDE/Theme editor section. WordPress does support saving other languages if the wysiwyg editor is disabled.
What I am trying to achieve is a basic wordpress theme to store snippets. In essence it will be a snippet manager using the features of wordpress to organize and the features of synchi to highlight the syntax. I would then think that it would be an awesome snippet manager to host on your own server and keep track of code snippet to then use in future projects. Its also cool to be able to access the snippets remotely from anywhere.