"The Noo Yoik versus MC-1 issue isn't a biggie - no-one in Strontium Dog refers to Brit Cit any more (it's the Greater London Crater, unless I'm mistaken...)."
It's easy to argue that Greater London was a designated sector of Brit-Cit, so that would work fine, too.
"Maybe the days of the Mega-Cities are over by 2140- they certainly are by 2150."
I was going to say that I think the mega-cities still exist after 2150, but you could be right. When the Great War is described in 'Portrait of a Mutant' it says that there has never been another war like it, and given the impact of the Great Atom War and Judgement Day it must have been unbelievably destructive. I suppose it is possible that the great mega-cities are transformed.
Incidentally, I forgot that MC2 was destroyed during Judgement Day - maybe it could be recontructed and provide the sort of city we see in 'Day of the Droids'.
"Awwwgh, now you've got me doing it."
Fun, isn't it?
You know, a lot of writers complain that tying series together and sticking to continuity limits their ability to be creative. I don't buy that at all. I see the combined series and the timeline they create as a source of interesting questions. The answers will be stories (how good or bad depends on the writer).
Regards
Robin