Even though the George Sheriff Group plants are classed as sterile and divided by division, they do have a limited fertility and some of them will on occasion produce viable seeds. I know that I managed to grow a few many years ago from Huntfield, before I think the group even existed at which point I was told in no uncertain terms that they were technically "sterile", one of them grew on to flowering size and looked very much like Ascreavie, with much more notched leaves and gappy flowers than Huntfield. I gave a plant of it to Evelyn Stevens many years ago and that was pretty much the last that I heard of it, my own plant just died off, nothing like as vigorous or robust as Huntfield, not really worth naming or growing on.
I think the main point is that any such seedlings should never be passed around under the name (or anything close to the name) of the parent plant as they may well be rather inferior and could cause considerable confusion to recipients if divisions were distributed under misleading or simply wrong names. If in fact you end up with a few really good.distinct seedlings with better fertility than their parents, then there may in time be a case for giving them a separate name but probably only for divisions of the best seedlings, after they have been trialled for a few years in different locations.
The value of such seedlings is possibly more as breeding stock rather than a plant in their own right, although you may well be lucky and get some attractive plants from such seeds. If they can be used perhaps to create new hybrids with some useful improvements on their parent plants, which might include characteristics such as significantly earlier or later flowering seasons, maybe increased vigour, taller flowering stems, larger flowers, different flower colours etc. I got a few of these seeds from the seed exchange to try out, plus I did manage to find a few viable looking seeds on my Huntfield plants last summer too, which I also collected and sowed this week too. I think that the George Sheriff Group plants are possibly polyploid hybrids which is perhaps the reason for the poor fertility that they have but as I seem to be creating other slightly complex hybrids for my own amusement, sometimes I can get seeds from seemingly sterile plants by crossing them with some of my other hybrids. It is fascinating when you manage to get something really good simply from experimenting and crossing a variety of different Meconopsis, in my case only the large flowered perennial blue types for now.