Actually in a "sort of related" area,my friend Sid Marks makes a very strong case for the "first pressing" syndrome,which is, in and of itself, a very valid area of getting much better performance without doing a thing to the set-up!!
There are numerous variables involved in analog "Heaven"!No parameter is perfect.
Sid's point,and he is also a FANATIC,with a capital "F",is if we start with the earliest pressing available(he actually gets numerous ones,and compares them)you bridge the gap to better sound.I know you all are aware of this,but I have been sort of shocked at how many "early" pressings are "significantly" improved upon,by a slightly earlier one.Who has the time for all this?Not me!However it bridges the performance gap,all the more!!Makes me think, too!