I suggest a better ending. I've only played through version 1.26 so I don't know if that's changed, but when you get rid of your last rival, all i got was a pink pop-up with the message:
"You've won the game! Hooray!"
That just seems so... lame. Maybe instead you can show a picture of the player sitting on a throne with the crushed skulls of his enemies lying around him (if he was evil) or a crowd cheering the player as he is being carried through the streets in a parade (if he was good) along with a longer narrative, about defeating all rivals and becoming leader of the criminal elements in Crossgate; next stop, the world!
Well, I'm not that creative so my suggestions are probably just as bad. But I'm sure someone must be able to come up with something longer than a couple of words.
Other than the ending, there needs to be a screen or something showing how much of the city you currently control and how your rivals are doing. It's so frustrating wondering if the sabotage missions were actually doing anything. Not to mention practically every time I defeated a rival the game crashed, which also made winning a lot harder.
Another minor annoyance I have is that even though girls think you're their true love, you still get the same options. Can't consensual sex be possible?
I'm not sure about others, but I'd like the player to be able to take a more active role. What if you could have a player join the gangs on their missions, giving them an extra 10% chance of success? The cost could be that you couldn't talk to any girls the next turn, because you're too tired and worn out.