Don't go nuts on those forts. They are actually quite useless for doing anything other than preventing fort decay during the winter. You can't actually do much to fortify in poor weather now, the penalties are huge. If you haven't got forts dug in already, don't expect much.
As far as calling games go, my position is this: runaways aren't interesting. If a match isn't competitive and one side or the other is just being taken to the cleaners, it's completely ok for the loser to acknowledge this, throw in the towel, admit he's lost, and start over. Nor should the winner feel "robbed." If he has any sense of honor whatsoever, he'll actually feel embarrassed at how badly it's going for the other side and take the win. There's no need to humiliate the other guy.
Glad to see you trying to help Bill and not insult his intelligence or his opponents motives playing the game. There are people out there, which are friends, that like to play these types of game and also keep them interesting and going because it's such a huge time investments. But if both sides agree before a game starts that it's not until the end or some real life constraints, nobody should quit (before auto-vic). I'll always make that clear before I start games now, but still obviously no guarantees.
I'm glad Bill has seen the honor in playing on and there's nothing wrong with abulbulian being a sportsman and agree to some terms to keep the game fun. It's their game...
I agree not to go crazy on forts, don't build any new ones until they are cheap in Nov. Get lots of Sapper and RR construction units, and spread them out to each army in a zone with diggers.