I totally agree with many of the comments about 'customer expectations' - not just as far as the 'younger generation' are concerned!
As well as playing with jazz groups, I also do gigs on KN7000 with a Guitarist/Singer, performing songs from the 60s and 70s, for audiences who were of the 'younger generation' at that time and they expect to hear these songs sounding as they remember them - like the original!!
Most of these songs just don't sound right unless the 'backing' is a reasonably authentic representation of the original. To this end, I spent many hours listening to the accompaniments in these songs and then trying to create styles which produce a good representation of the original song backing.
From the comments we have received during our gigs, it would seem that the effort was certainly worthwhile.