That's interesting about characterisation; my crossover fic is very SG1 season 7 but in the meantime we've had three seasons and two movies radically shifting the characters. I'm not alltogether certain I could get the characters back where they need to be and align that with audience expectations.

Your attitudes are much healthier than mine. :) I have tended to think "RL has done such nd such to me" but literary/fandom/creative reasons are just as valid, and no-one can contest those, either, at the end of the day.