Inspired by 70Chan[0] which I was led to by Ulcer[1], I coded up a simple document store[2] using curl. Feed it a URL via a type 7 link, and it checks for HTM|htm|HTML|html|TXT|txt|, rejects if not one of those, downloads the file to .[html|txt] and links it on the gophermap. Should work with http|https|gopher|whatever because curl.
Give it a try, toss something interesting at it...