As the title says extra edition which makes the game even crazier, and is a title update which is free and even comes with an additional 250gs, here's the trailer for it. I will check it out this weekend :)
I played it a little last night, and the fact you can pump up your agent from the get go is nice, spawn whatever guns/enemies/cars you want is a nice touch also. I do feel you need to be a little creative to get the most out of it, but its a nice addition and free :)
Crackdown's world is setup for fun, but they just needed to add more like GTAV, which you could play for several hours without actually doing anything in campaign.
I'd like to see more platforming challenges.
The reason R* gave you things like pool, darts etc is because its world was garbage with nothing really to do either. Its the main problem open world games face, but GTA is one of the worse ones there is. If anything they should stay away from copying from GTA.