So much of this so-called “discussion” is substantially pie-in-the sky; a load of pseudo-intellectual blether, and make believe economics of the madhouse.
It will never, in any significant form, come to anything.
Nothing "so-called" about this discussion. In your own inimitable way, you are taking part in it.
The technology your rubbish above is being currently used to great effect - as in the case of the Canadian identified this very week. The genie is out of the bottle never to return. It will be used to identify casualties in the future - although may not as much as it should be. Financial constraints will certainly have an impact.
The Fromelles Joint ID board meets again in April. You can be sure that the application of all ID technologies will be actively considered by this group to tease out extra IDs.
Of course, this group of experts will be involved in future projects to secure IDs for other casualties and they will take their Fromelles experience with them and continue to use the technology that has served them so well.
There seems to be a likelihood that significant numbers of remains are awaiting discovery in the Bullecourt area.
If this materialises ID work will be needed and will certainly be pursued. I am sure we will all be interested in any results.