I had every reason to expect good things from What If #41 from October of 1983 (which happened to hit the stands around my 26th birthday), given that its premise was to take a different approach to the interference of Paul Destine (the man known as Destiny) in the Sub-Mariner's life, and the man's role in the destruction of the realm of Atlantis where Namor's mother (Princess Fen) and grandfather (Emperor Thakorr) met their deaths.
And yet, I was left disappointed on several fronts after reading this forty-page tale, a story which held promise but for much of its content lacked depth (so to speak). Written by Alan Zelenetz (whom you Conan readers may be familiar with), its artists (Marc Silvestri and Mel Candido) turn in pages that provide Zelenetz with ample opportunity to give this story weight and bring its characters to life; instead, you may find that these characters mostly play to type and offer little to compel any investment on the reader's part. For argument's sake, however, there's very little meaningful characterization to draw on at this particular point in time in regard to the Atlanteans, and to Namor, beyond what we were given in Golden Age stories (barring any development provided to Namor in his time with the Invaders). That's not meant to offer an excuse for the bare-bones presentation offered by Zelenetz... nor imply an effort made to provide the story with some measure of authenticity, which admittedly would be a stretch on my part.
Irregardless, we're left to read these characters as presented. Namor here is much like he was in his reappearance in 1962--quick to pass judgment, seeing things only in black and white, a royal Atlantean at his grandfather's beck and call; Byrrah, deceptive and manipulative with an eye on the throne; Krang, ambitious and as much of an opportunist as Byrrah; and the Atlanteans, a fickle people prone to fall in line and believe whatever well-spun lies are delivered to them in a desperate hour. Descriptions which make the grand two-page introduction of Atlantis itself appear to be a facade, and ripe for disaster.