Don's View is one of the few new ideas
The Godfather II brings to the table. As in the first game, a large chunk of your playtime is concentrated on taking over and running rackets. While the original limited gang wars to families blowing up each other's businesses,
The Godfather II gives families the ability to re-take stolen businesses. It's a great feature - especially when watching the tutorial video - but in practice, it's a non-feature.
Taking over businesses is far too easy and rival families rarely go on the offensive, instead shrinking their forces back to other properties, awaiting your eventual attack. Certain functions, like the ability to send goons out to take over businesses, are present, but there isn't much of a point when you can easily do it yourself. The only time I actually used the "command" function was to send someone to defend a business that was under attack. However, this was usually done because I hated to see a good Capo go to waste, not because he needed to be there. Most of the time, the defenders I left behind were more than capable of aggressive negotiations with rival families.
Don's View does have its uses, though mainly as a map and way to keep track of your businesses. If you aren't trying to find a specific location or seeing how many businesses you need before you have full control over the racket, there's little incentive to use it. The problem is that so much of The Godfather II is built around Don's View that the rest of the game's faults are magnified. If the management systems worked, The Godfather II would be a unique spin on open-world crime games. But it doesn't, and the game is worse off because of it.
Considering the game's many flaws, I would be lying to you if I said I didn't have fun with the game. Despite everything, I managed to waste an entire weekend playing through the game. However, my motivation to play through the game probably had more to do with a compulsive need to collect Achievements than anything the gameplay had to offer. If you often find yourself in the same boat, The Godfather II should at least make for a good weekend rental. Other than that, skip it and watch the movie.