Biz, Totally agree.
It's ok for the airlines that can afford to replace their fleets every few years but for users of 20+ year old A320's there's a lot of work involved.
We always used to say that the 'A320 will be the Tristar of the future' and the from what i've seen that's coming true. (and we all remember them don't we??)
I remember the 747's coming out of London Airways hangar TBJ in nearly new condition after Major checks. I now see A330's coming out after C checks with next to nothing being done to them and normally in far worse condition than before they went in.
Not sure what the A330 and 777 will be like in 20+ years after half a dozen C checks but at least it should hopefully keep us all employed....