Yeah, sometimes when people's noses are somewhere other than (well you know... "What can Brown do for you today?") It can help quite a bit!
Of course it also feels pretty good when they are, well you know? Both can be helpful... Noses in different places? (There's a song in there somewhere.) However, "ears" and different perspective I agree is what can be most valuable here.
The stroking of the ego is good too! But too much stroking can lead to premature infatuation? And, we all want to prolong our infatuation if possible, and don't want to enjoy it prematurely? But rather, "when it is time." Infatuation based on the critiques of our performances of course? When the time is right, that's when it's best... I'm glad you got a better final mix :-D That's more important that other thing?