Doorway Page? or just a flawed idea?

[Jingo01]

I have a website which is on a .co.uk TLD and is primarily focused to the UK. Understandably I get very little in the way on US traffic, even though a lot of the content is applicable to the UK or US and could be made more so with a little tinkering.

The domain has some age to it and ranks quite well for a variety of keywords and phrases, so it seems sensible to keep the site on this domain.

The .com version of the domain is no longer available, and the current owner does not seem inclined to sell it to me. So, I am considering registering a very similar .com domain and simply using it to drive some traffic to the .co.uk site. To do this, I would have the same category pages and the same (or similar) list of links to the various pages in those categories. But instead instead of linking to a page on the new .com, it would take visitors to the existing page on the .co.uk.

I would make this transparent to visitors ("Take a look at these pages on our sister site bluewidgets.co.uk") and the .com would have some unique content of its own.

Would this be considered some kind of Doorway site/page (content rich doorway), or is it simply bad idea which is unlikely to drive any traffic?

[nwinternetmarketing]

If I am hearing you correctly, you're basically purchasing a typo domain name? Or one that could potentially infringe on another's digital assets?

Seems like a whole lot of work to me.