We were all sick of how the previous releases went down. Staging the content and pricing the way they did might be the best chance the series has of meeting it's true potential, and it has been good to me since OFP so I will give it a chance.
Sucks to buy a $60 MP game I guess (Though most scenarios in previous games worked alone or with others anyway). But every campaign has been all but unplayable in the past so maybe this will give them a chance to really lock some good content down, as with the ARMA 2 DLC.
We all want that awesome co-op open world non-linear campaign from ARMA 2, but there is no developer on the planet that could have made that work properly.