Whilst I personally don't have a problem with the exclusive silver-border promos, I suspect that those who do will see a difference between them and the holiday cards - the holiday cards were (to my understanding) distributed to specific people associated with WotC (staff, major customers, etc) so there was no expectation for Joe Public to be able to get them. But these are available to anyone - IF they are lucky enough to be in the right place at the right time. Thoughts?
We treat them very similarly in how we design them. And one of the three of the Hascon cards is showing up in a for-sale booster product (Sword of Dungeons & Dragons in Unstable).
There will never be a high level tournament of any kind where these cards are necessary to acquire.
That said, I understand the frustration. On the flip side, it allows us to make some very quirky cards that would normally never get made.