1) I must take issue with the Saiga .308 being more accurate or more reliable than the M14. I'd like to see some hard data there, because there are semi-auto-only versions of the M14 which are used as police swat rifles, being as accurate as bolt-action weapons.
2) Col. Coopers "Scout Rifle" concept uses "Scout" to mean the old fashioned idea of a frontier ranger, someone who will be all alone and needs one weapon which can do everything and be utterly reliable and accurate. He intended it as a hunting weapon, capable of harvesting any game which doesn't bite back.
Whatever Steyr designed it for, I'm not sure, but I find it to be a misfit: in military service, there are precision weapons and firepower weapons, running from sniper rifles to machine guns. The scout is neither, and is more expensive than most other options without being good at anything.
I'd rather see a FN-FAL or standard 7.62 sniper rifle than the scout. But it won't matter, because the existing 7.62 rifle doesn't drop people well. Maybe after the damage model is finalized, it will be sorted out.