Well, I'm having fun. LOL. The driving is just plain sloppy, think of Sleeping Dogs. In fact the game has more in common with Sleeping Dogs than GTA. The Hacking is fun. You would think it would get repetitive but I seriously wasted 3 hours yesterday just doing the side missions and the gang hideouts. The shooting is like Splinter Cell: Blacklist. The cover system is too forgiving for me, you can point to the cover pretty far away and he will go there. lol. But, it's harder than GTA V in that aspect. DON'T Think you can just run up on the gang bosses and shoot your way through. If they surround you...forget about it. Stealth hacking before entering a secure area is fun. Texting threats to the guards is funny and hacking their explosives is entertaining to watch. So, it's a little more realistic than GTA but not as polished. There is a LOT to do in the damn game.
There are some little easter eggs about Assassin's Creed in the game. You listen in to a conversation between a father and son playing the game. And I'm ran across a former Abstergo Employee.