well there are no pics of the other mentioned knives because thay havn't been created yet, they're what we want dan to make.
The s7 would be a version of the s6 with about a 7-8 inch blade.
the s8 would obviously be an even bigger version.
the ratweiler is a swamprat knife,(a busse kin company)
and we would like to see a scrapyard version with a res-c handle.
a skelly would be something like a yardkeeper (just released) or dumpster mutt, but a skelly version.
hope that helps a little, I'm sure ssome other guys will help a little more.
you can see the swamprat ratweiler here:
http://www.shop.ratknives.com/product.sc?categoryId=1&productId=111