Once again, I'm very impressed with Devin Low (Magic's Lead Developer).
He just put up an article that directly mirrors a constant inner dialogue I have while working on my cards:
If somebody sees this one card but not the rest of the set, they'll think it sucks.
And I suppose there's no getting around that. But hopefully they've read Low's article about how you need Context before you can evaluate a card.
Because my set is super-fun (and appears to be) balanced right now!!!