Ok, well since running a new toon, I have realized one thing quickly... not as many people run SOS as they used to. That being the case, it is even harder to get a mod on your Tier III as it used to be; let alone Tier II. So, as a suggestion, make it like it used to be where we can trade in Draconic for each of the runes. If that is not good, it can be for Eldritch only, then an amount of Eldritch or a Tempest, then an amont of Tempests for Sovereign. At least some way to combine.
Another suggestion is to make Draconic bound to account. I have a few toons with over 100 draconic with no need to change their armor.
Last suggestion, once we use a rune type, it should become known. So, if we pick it up again, we know its effect.