Does my chapter seem like a good fit as an Iron Hands Successor?

The Astral Krakens are an Iron Hands successor formed in the 23rd Founding . They work closely alongside a Stygies-VIII Explorator Fleet and are adept at chemical warfare and have a penchant for research and analysis. Their big secret is that they collect and study not only Imperial, but Xenos artifacts. They remain hesitant about the adaptation of said artifacts, but the more radical side (along with the tech priests of the Fleet) advocates for their use. Their relationship with the Explorator Fleet also allows them some rarer equipment. I’m still trying to figure out a flaw for them though.

I originally envisioned them as either Ultramarines or Dark Angels successor, but some people from those communities don’t really believe they fit with those chapters. I figured they might fit in with you guys, given their ties to the Mechanicus and their analytical nature. Feedback/criticism is welcome!