Do creatures miss when they atk as well? Thematically, blinded would suggest that.
No. But perhaps there could be more of a percent chance.
If you are blinded and you're just wildly attacking everywhere, at some point you will hit something.
I agree with Yoyobro - why not just delay the creature for 1 turn? That way it won't hit the archive as easily as poor shrine of vesta did.
The smithy is here to smooth out the problems in the card before it's sent to voting in Crucible. So, yea, suggestions = good