"The wonderful world of LFE" thread revisited ?
AVR bass management? The few people that care about calibrating and listen to the result don't need (and hate) LFE content for music.
People that do not know how to calibrate and neither ask someone else to do it, would ever be interested in high quality audio listening?
5.1 with LFE channel null would be the best?, to be highly compatible with 6 channel MCH players?
5.0 I like when I see that in some discs
4.0 Should go trough 6 channels 5.1 with no content in Center and LFE
Conclusion:
If the customer listener does not care about, then it is indiferent to use LFE or not.
If the customer listener cares and see 5.0, then thinks, the mixer/producer knows how to do it

So... Don't use LFE for music mixes.