So what is the actual reason balance fixes from kingdoms can't be added to the grand campaign? (a bit of technical detail wouldn't go amiss) As nothing stated so far seems to add up. For instance if your able to make a compatibility patch there doesn't seem to be any reason why you can't transfer over the balance fixes .

Basically it seems a bit of a non-issue that you've made a big deal out of and one easy solution of waiting until the balancing for the grand campaign is done before releasing kingoms hence easily solving the problem has been overlooked so you can make more money. That doesn't even need to be done, you can have your cake and eat it by just creating a balancing patch between now and when kingdoms is released for the grand campaign, fixing any bugs with kingdoms you missed and releasing it just after kingdoms is released as the only reason from your last paragraph of why it won't be released with kingdoms is you didn't have the time before kingdoms went gold, however if you can change it at all it means you can institute it on a patch that you now have time to make