While I can agree wih the overall sentiment of what you say, I am not in favor of similar scenes to the dream sequences because for one, I feel that those scenes are not there for the sake of humanizing Shepard but for the sake of symbolism and that is not an impression I want to come away with from a sequence that is suppose to be about PTSD and characterization.
The dream sequences were also mandatory and so took the choice of how Shepard experienced loss and dealt with it out of the players' hands which is unnecessary, in my opinion as the below quests has shown it can be expanded upon while the option to do so rest with the player.
In my opinion, we should not have had to play through the dreams but instead have the option of talking to our companions about dreams or similar indications of post-trauma stress; if we go with the dreams, it should be up to the player to decide what the dreams were about and entailed through the ensuing dialogue and the effect it has on them thereby providing the oppertunity to actually explore the emotional and psychological impact the dreams have and allow for optional relationship building.
If Shepard refuses to talk to the companion about it then that provides a neat option of roleplaying and character building as well: One Shepard might have dealt alone with their grief for so long that, that is what they always do.
Quests like "I Remember Me" from the first Mass Effect, I feel, are the better way of humanizing Shepard and allow the players options in how to humanize Shepard.
I made a post about this a long while ago and thankfully, I could find it;
Basically, options and dialogue.
Note: this is my opinionated opinion. My personal dislike of the dream sequences and similar scenes do not extend to the people who like them.
See this I think is the better to way to present a counter argument to a previous poster's post, or one's own differing opinion to another person's.
It's refreshing to see someone do this without insulting someone else, questioning their intelligence, and just presuming they are younger and inferior to you because they disagree with your supposedly "superior" opinion and outlook.
And for the most part, I agree with you on the dream sequences. It was more the signs of stress and strain on Shepard I preferred and appreciated in ME3. I felt other characters had there moments too which was nice. Like Garrus talking to his family, Liara post-Thessia, etc.
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Either way, it isn't glorious. It's stupid. War is stupid. The people who want to fight are stupid and I have no respect for them... no matter which side they're on. 
