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You can change the FURLs if you wanted to, but really there is little point. The structure is proven to be spiderable. Adding ".html" at the end is almost pointless in this day and age as most of the internet is dynamically generated and Google knows this. Moving keywords around, etc has never been proven to substantially increase your ranking.

Personally, I would be incredibly wary of "Virtual HTML". This is where vBSEO replaces certain sections of text with dynamic javascript to cloak it from search engines. In my view, that is flawed because search engines parse and run javascript anyway to detect cloaked HTML and may penalize your ranking for doing so. Just a thought. :) I see elsewhere you say Bob's blog on switching to Invision Community Forum and that he's seen a rise in traffic since the switch. That tells me that maybe Google is wise to tricks that vBSEO employ. Either way, it proves that such measures aren't required for good placement.