It gets plaudits for recognizing how tiresome saving the world from the big bad evil can get and sending you on an open-ended quest of self improvement instead. These additional game systems of attribute and reputation management, as well as the character creation questions would obviously be hugely influential on future games. Beyond that, it's still the same Ultima formula from the first three games with some of the same warts carrying over. It was definitely the most refined game in the series at its release, but I think the exploration and combat were more tedious than adventurous.