I've played eight campaign games now, plus a 'special' with Saalfeld re-set in the Iberian Peninsular. The games have all been good - and some have been excellent, amongst the best games I've ever played.
I do howeverbegin to question whether the campaign 'framing' has actually helped too much, I begin to think that it has been a slight obstacle, as it is added a (small) paperwork overhead for possibly little gain - the Grant and Asquith scenarios are fine 'as is'. Furthermore, I can't remember actually having my decision making during the games affected at any point by the scenario being set in a campaign.
So, no hasty decisions, but I am considering ending the campaign and simply continuing to play through the scenarios, and saving my campaigning for a real campaign.