Hi – No, there is currently no way to upload files to the wiki. You can certainly cut and paste content, but I don’t think that’s what you’re looking for. In terms of links – when you create a wiki, it can be tagged and you can create a tag cloud on your wiki main page to aggregate content. You can also create hierarchies via parent/child relationship, and links will be created at the bottom of your wiki pages – to the parent or to the pages children. And the plugin has several useful widgets – “(Wiki) Recently Active”, “(Wiki) Most Active” and “(Wiki) Tag Cloud” that you can use to organize your pages. And of course each wiki page has a permalink, and you can link to other pages. And you could put links to uploaded files also – as well as embed video/images. Most of the features found in a regular WP post are available in a wiki page, I think.
I don’t know if this helps answering your question…