Unsigned Message: Thats not satoshi...
satoshi would know that a signed message is needed if he is interested that his opinion is recognized
That would make that particular issue settle by his intervention BUT it would reinforce the point that if an authority can impose their opinion by their "status" then the system is broken.
It would create a precedent where in each dispute satoshi must say his opinion with a signed message which would in turn prove that BTC is centralized around his decisions.
you are right.
but your poll suggests that this message is from satoshi. so i am not able to answer it...
i actually believe that:
1) satoshi is pro bigger blocks
2) satoshi wouldnt have a problem with forks (like xt or classic) to solve such issues (aka let the users decide)
i cant prove it though...