The alternative is this.
In a section on magic traditions, which would serve as readymade examples for newbies, you'd have the Golden Wyvern Adept. I assume they're going to do something like this anyway, so we're already halfway there.
Under "Golden Wyvern Adept" you have: Typical Feats: Spell Shaping, blah, blah, blah.
There you go. All the same flavor and hooks you asked for, but without hardwiring it. It's like the prestige classes in the 3.5 DMG. Easy to use, easy to toss out.
Not sure why Mearls didn't see that this was what the poster was going on about, nor why this isn't just as useful, cool, and flavorful an idea as the "we won't tell you anything about the Golden Wyvern, we'll just name a feat after them and let you do the rest" schtick.
Cheers,
Cam