Pat,
Fairway mowing lines are intrinsic to the strategic merit of a golf hole, as they shrink, so do angles of approach, and the strategy of the hole is less appreciable. I think it is a shame to see bunkers encircled in rough, preventing balls from running into them and serving the purpose intended by the original architect.
There are many clubs that have embarked on restoring their fairway mowing lines, although I would venture to guess most of these projects have been a part of a larger restoration or master plan put together by a golf architect. It seems wider is often viewed as easier amongst memberships, and they can be hesitant on those grounds.
As the green chairman at my club, I head out each spring with the superintendent and re-examine and re-establish our fairway mowing lines which had strayed over decades from the bunkers.
TK