This seems backwards. I hope you won't take me pointing it out amiss, but the EWF is not aspiring to transform its territory into a giant Dragonnewt through everyone realising their inner Dragonnewt, including former barbarians now converted to the worship of Orlanth Dragonnewtfriend. Conversely, a Dragonnewt can be summed up by the combination of Dragon and Man runes.
Pause a moment to think about what the EWF are
really trying to do... pause and consider what exists in Glorantha. Dragons exist only through the dreams of the sleeping True Dragons. Their presence is suspected but shadowy. Dragonewts, however, are present; hence their Rune.
The Great Dragon Project does not need a Dragon Rune. What the EWF is doing is trying to
create the Dragon Rune. Nothing more or less...
Similarly, if Sorcery, which has always been abstract and mystical, is now linked to runes, the idea of another school of magic which doesn't draw on runes seems to break the newly established consistency (which I applaud, btw).
Draconic magic is more founded on denial than anything else. Its cults are still linked to the runes through a variety of different mechanisms, but the EWF's ultimate goal is to realise the Cosmic Dragon: to remake infinity. To them all the other runes are part of the Dragon Rune, or OUROBOROS.
Dropping Dragon also makes the rules-set less applicable to fantasy worlds with dragons but not dragonnewts; that is, most of them, including Elric and Slaine IIRC.
The runes as Glorantha uses them as certainly redundant as far as Elric is concerned, and probably Slaine. There's never been a dragon rune for Elric (or in any other Glorantha materials).
Perhaps if someone could explain the reasoning behind the decision to drop various runes? I can see the redundancy of Shadow, but others not so much. Sorry to carry on, but it just seems rather arbitrary and pointless (and as the various errata and artworks show, like something of a last minute decision).
I hope I have. We went back to the original RQ runes set, which has never included a Dragon Rune (or a Metal Rune, or Shadow Rune, and so on). The additional ones crept into MRQ for good reasons, and we've dropped them now with equally good reasons. But these
weren't last minute decisions.
But, as ever, if your game wants or needs a Dragon Rune, then make one up! There's nothing stopping you from doing so... and they are, essentially, abstract concepts.