Personally I LOVED being back in the Matrix universe, but the movie was just bad. The amazing action sequences that made the previous movies were either absent or slow Keanu is getting old, the hand to hand stuff just isn't at the level it needs to be for this type of movie, not to mention the story line was just meh. As I mentioned before I loved the original trilogy and the Matrix world, I even enjoyed the story line of the game - although I couldnt even tell you what it was 20 years later
I just wanted more within that world.
I reckon a TV series around the Merovingian (the guy with the hot wife from the 2nd movie) would be sick or some stories from the Zion characters, a different Matrix attempt, the Oracle, the original fall of the world even a story from the Machine's side of things like they did in the Animatrix, they could even do a west world type thing within the universe where people know they are in the Matrix and exploit it etc.. there are so many stories that could be told in that Universe it really surprises me they haven't milked it more.