That doesn't bother me. I was out of town when they offered the tribbles for testing. I missed out on them entirely. I'm glad there's a chance to get them now if I wanted them: which I don't.
I also think it's kind of lame to only test for free items. I was testing on tribble before they ever offered anything for doing it. I do it because I like the game and want to see it get better. Not because I can get a free tribble I'll never use anway.