@sundance31us True, Bioware made it too weak and not able to be upgraded then again, it was a free DLC tied to their Service Pass back in the day that EA came up woth for all their games at the time to discourage players from buying used games. For those new players things like: Zaeed, Firewalker, Normandy Crash Site and others were initially only available as free DLC tied to a lock that you either got a code when buying a new game (or hoping that used copy name with an unused code) or had to pay to get access to the free DLC. While Zaeed was an ok character the fact that he was available at launch irked a lot of people given that he has so many unique interactions on missions (same as Kasumi which originally was sold at $15 with her one mission, I would have given her for free and leave that $15 space for a mission where we ran into the Virmire Survivor post Horizon but that's just me) it left the feeling that those free DLC's were cut from the main game to force people to just buy a new game and as such much of their original mechanics (upgrading the HH like we could the Normandy SR-2) might have been lost in the rush to launch it.
But yeah, thw Hammerhead left much to be desired even if there is potential there plus, I love it's shark like design and sharks rule.