To put things short and simple, I find it dumb that a husk - a mindless creature that's controlled by the Reapers - has these greater thoughts and goals to save the galaxy from the Reapers.
Admittedly, Nihlus/Shields' involvement in the plot is by far the weakest part of the story largely due to the improbability factor of his involvement, but it's thanks to the idea that the plot unfolded to begin with (remember, it all started with a satire comic based off of an annoying meme). As it is, I think the rest of the story is brilliant, especially the Crucible plot twist, and Cerberus' contingency plan.
Another two words: Marauder Shields (the comic, not the annoying meme)
As for the comic... let's just leave it as 'I'm not a fan'.