The one inconsistancy that has changed has been Igor in Beers. From the ealier books we are lead to believe that he is the classic Igor from Frankenstien moives. But as it eveloves we saw two types of Igors from 5th Elephant
and the one in Beers.
But I think in Thud!
this character has been changed to someone who calls himself as Igor to give the bar a certain feel. An since 5th Elephant
there hasn't been an Igor in A-M so the bartender in Beers had no one to say that he wasn't a proper Igor.
But now PTerry has fixed that troublesome little knot! So as stated ealier in this thread that this just shows that characters can evolve at the writers descretion, which is fine by me. Since we as a reader evolve with them and our experiences in life change as well in our views.
Does that make any sense what I just wrote? Working all night and trying to make sense does not make good bed fellows!