There were zero improvements over Saints Row 3, which was pretty disappointing. They essentially just changed the storyline. The real question though. Is it fun? Simply put, yes. The addition of "Super Powers" makes things pretty entertaining. They also add various ways to approach combat and drastically speed up travel around the map. The story and side quests can become very repetitive. Honestly by the time I got to the end of the storyline I was just ready to be done with it. I wasn't overly impressed with anything, but it GTA V's weird younger brother is what you're looking for this is the game for you.