Actually, looking back on how this all went off the rails I think there's an even easier solution to this.
Don't advertise what titles are coming. Just say there's a TBT, and there will be over 50 titles and leave it at that.
You don't create insane amounts of demand for titles that will be OOS within a second. You don't draw the flippers to the site in advance to snag titles that go for hundreds on the secondary market. People will be more pleasantly surprised that a sought after title is up for grabs, than disappointed they waited for two days and didn't get one. People will be still disappointed for missing out, but not as much as if they knew it was coming, waited and then found there was only a small quantity available.
I think the hype of the titles is more the problem, than the quantity they got.