Speaking of King Conan's feats in RoK, they missed one, but it is obvious they missed to list Power Attack. These first editions are known to have many errors.
Something that comes to my atention, and that I like about King Conan's description, is the many feats (4- including Striking Cobra) that are not 'power gaming oriented'. Here's the explanation:
While many -if not most- players seek to maximize on to hit and to damage feats, King Conan has these not so 'power oriented' feats, that of course, represent many of the most important abilities that allow him to survive:
I list as 'not power oriented' Striking Cobra, because the description say:
So long as combat has not yet begun, you may attempt a Bluff check opposed by your opponents' Sense Motive checks.
So; it can only occur only before combat has begun, thus I consider it a 'risky' feat because: 1) it has to occur before combat, and 2) you must succeed on a bluff check. This is tricky to achieve even for thieves, so IMO it must be even more difficult to achieve for other classes with less skill points.
These other feats (Sleep Mastery, Dabbler, Navigation) are very useful and very interesting, but as one of my players pointed out: 'good for role playing, not very much for combat'. I understand his pragmatism when it comes to combat after the first round of an encounter, but I also understand, that it is this combination of feats and class special abilities that represent the Conan of Howard, and I regret that players are not wiling to take them, and only seek destructive power.