On the flipside of what Gaffer said... Sure, a BIG patch may give them more press.. But, for players who have been there and done that... and play a lot.. They are finishing up the content in a couple of weeks, and then have months to wait for any new updates. I can only speak for myself, but.. once I complete new content, and there is nothing left for me to do, but the same old missions.. I start to get bored. I need to be fed new content on regular occassions so that I am pacified. Otherwise, I just get bored, and my account expires. I would rather see a decent monthly update.. than a BIG update every 3 to 4 months..
But thats just me