So the question was: signature or no signature. It made me realize, that yes, of course you need to sign it- a. it identifies that it was actually made by someone, and b. it gives value to the piece. On the other hand, it also seems pretentious for those same reasons as to why it should be signed.
Regardless, it all goes back to your mark- your identity, who you are, as a designer, as a member of society, as a human being....
Pretty deep, I know...