I did notice the repetitiveness of AC, but it really didn't bother me. I beat the game and did every "investigation" mission. Sure they were all the same things over and over, but I had so much fun running around the city that it didn't matter. The new PC only investigations were ok. I liked the archer assassination and the race ones. The merchant stand destruction ones kinda sucked because no matter what it got the attention of the guards. Oh well, cant win em all.
Also, those templars would show up in the worst places. "I just killed a pile of guards and now have 10 more actively searching for me, so I'm going to do my monk thing and slowly walk away and hide over th...fuck a templar!"