Excuse me for saying, But that's exactly why I don't like the MEHEM. It feels out of plot to have that much emotional intensity. Also, The plot is still the same, And it also feels out of place in the mass effect universe. I have the utmost respect for BioWare's artistic integrity. The dark energy ending has some flaws, But it feels like it'd serve the plot very well if it entered the developing stage. That's the original artistic integrity of BioWare. The current ending has nothing to do with their integrity.
Forgive me for sounding rude about this, but.... unless you worked directly for BioWare and had firsthand clearance and access to their writing and development teams.... then you don't have a damn clue as to what the original ending concept and "artistic integrity" of Mass Effect 3 was. Neither do I or Mr Fob or anyone else on these forums, for that matter - only the ME3 development team themselves knows what really went on during the concept and writing stages for the game's story.
Speaking strictly for myself, I don't use MEHEM myself when I play ME3 (I use the JAM mod and, god willing, will eventually work on my own Catalyst mod to change the character and motives of the Reapers), but what I will say is that the amount of work that Fob and his team have put into the mod is remarkable and that the mod's ending touches on a core issue that many players had with the game: that there is no real happy ending for Shepard and crew, just alternative versions of grey (or Red/Blue/Green, if you prefer). Players have invested so much time and energy into playing their Shepards, taking them on this journey across three games and 5-6 years, and to see the character have no real chance for happiness or peace after all their struggles is a punch to the fricken' gut. MEHEM is one option (and I repeat, it's an option to install it...) that gives players an ending that they wanted to see for their Shepards and that, I deeply respect.
RMAM: Saw that picture once before as well, have also thought that something similar would be cool to implement for showing Shepard's alive instead of that generic pre-rendered vid. However, right now, there's still a long way to go as far as research and using ME3Explorer before such a concept can be actually created for the game.