As one of the naysayers who never expected Niantic to actually do something like this, I'm impressed. I feel much better about continually holding onto high IV versions of CD eligible Pokemon after they've had their day. This also means I can trade away lower IV versions I had evolved for the sake of getting their moves.
The cynic in me wonders if this is only being done because they don't know what to do for any of the other Gen 3 Pokemon (they skipped all the way down the dex to Beldum, the last family before legendaries) but overall I'm pretty happy with this.