One major question Is.
Does weapons have durability like in FO3 and NV.
The answer seems to be for now that there's no weapon degradation anymore.
About enemies A.I this also shown in video combat trailer.
When reloading weapons enemies will start charging at you trying to kill you before you finish reloading.
They will hide behind objects while you reload your gun and start charging again.
Seems A.I is now abit improved then previous games and I like this feature.