Also: Morokei is most useful mask. I mean Goddamn that +100% magic regen is insane.
dont forget Otar, if you max lvl smithing it can be a good adition to any warrior since its a heavy armor and the enchant allows you to tank against magic a bit.
as for the Barrows and other burial places.
each barrow has a different story in the game. for example there's that about a dragon priest that is awakening and you help the ghost guarding the place to destroy it before it revives ot its full potential.
Dragon Priests and their servants were put on the barrows in order to keep them at bay in case the Dragons returned.
there's also the thing that some Draugr arent actually prisoners, but keepers. they are basically the automated defense system on the barrows. so it makes sense for them to attack everything that seems to be an intruder on the place.
not all of them awake of course, there are cases where you can traverse a chamber and they wont notice, or only a few will awake in order to defend the place.
finally, most Nords seem to have a respect for the burial mounds. as its expected, they are the ancestral grounds and as such mortals shouldnt be messing around down there.
most of the folks that you find on the barrows are either bandits trying to get a living by raiding the barrow and looting the riches, or setting up base on it. to spellcasters practicing netromancy or even vampires using the place as a secret lair.
there are only a few cases where you see a nord or normal citizen related to the barrow, like that woman trying to find some heritage papers or the guy saving his buried family members from that elven necromancer.
now, raiding seems to just be something looked down upo by Nordic society. they dont really have any policy about it. its most about respect and fear than any other thing.