[X] Plan: On Stranger Tides
-[X] Striking Eagles
-[X] Navy Blue primary, Gold secondary and tertiary
-[X] An eagle's talon
-[X] Suffer Not...(Chaos, The Xenos, Fools, etc..)
-[X] Boarding Specialists: The Chapter's Marines are truly masters at boarding voidcraft - even by Space Marine standards.
-[X] Deepstrikes: More so than even other Space Marines, this Chapter has gained a mastery of the orbital strikes Adeptus Astartes are famous for.
-[X] Extra Thunderhawks: The Chapter has access to additional Thunderhawks, of both Gunship, Transporter and Annihilator models, giving them superior heavy air power. (5 points)
There are three main things I am aiming for here. The first is to take advantage of the universal attributes of Space Marines that make them really good at these high speed, high risk operations.
The second is to use our traits in a synergistic way that isn't just straight up sieges. In this case we'll be ideal attachments to the Imperial Navy and thus can counter boardings along with being very good at Alpha striking important locations and holding them until backup arrives. Oh, and we will be very useful whenever warp problems occur because we eat daemons.
The third is to kneecap the Age of Apostosy. The two biggest ways would be to weaken the burgeoning Imperial cult and to kill Vandire, but another method is to isolate his forces. By attaching ourselves to The Navy we also limit how many detectors they have. With less naval support any given planet is much easier to isolate.
honestly though, I also think this idea is just plain cool. It'll be like the Great Crusade never ended.
Edit: In terms of names and aesthetic ai like the idea that they are trying to hew as close to Big E as they are possibly allowed without directly stepping on any toes and risking censure for it.
Similarly I imagine they are holding to a very idealized view of The Emperor and The Great Crusade era Imperium due to their traits. I doubt they fully understand it all, but they desperately try and there is something endearing tragic about that thought.