I don't get time to hit this site much anymore, so here's a quick opinion without having read the whole thread.
Two knives.
If bushcraft means Steel Heart to you, a 4" Nessmuk won't do. But if a finely crafted and tuned precision blade is what you associate with making do in the woods, a Steel Heart sized knife will be unsuitable. Looking at some of the photos presinted immediately above this post I was re-impressed with the capability of my Battle Inspired Bolo from a fairly recent 'ganzaaaaaaaaa. In fact I have that knife situated in my "don't go to the woods without this bag" bag right now, FWTW. So I consider the larger Nessmuk Variant pretty much covered, and for me the only thing left wanting is Jerry's version of a genuine G.W.S. Nessmuk knife. Personally, I feel that the original Swamp Rat Howling Rat is the most Nessmuk-like steel yet to come out of Wausseon (ymmv), given that you can roll-cut with it all the way into the flat and choke rught up to the edge for fine detailed work, but I prefer the HR design to the original Nessmuk because the HR has a choil and a "guard" to prevent slippage onto the edge (something I consider valuable in a knife that will be used miles if not hours and days from dedicated medical attention. For that matter, I very much like Daniel Koster's version). So I guess what I'm getting at is that I'm impressed with how a knife performs Nessmuk duty moreso than how a knife adheres to Nessmuk aesthetic design. Which is how I believe ole GW Sears would go about it if he was designing it all over again today. That said, if it's going to be called Nessmuk it ought to be as true to the original design as possible.
There may also have to be different grades of the design, as a true Nessmuk detail knife should probably be about .125-.15" thick, while it would seem to me that many INFI purchasers will want a version closer to .2".
My trilogy:
BIBB, HR, Spyderco Delica (but sometimes I cheat and grab a GB Wildlife...).