Introversion

I like some of what you've said but not alot. How long have you played, and how many prisoners? This would mainly be a threat for say 200-300+ prisons, if you have less than 200 you might need to expand more in general. If you have that number, and still have no problems, you've either not waited long enough to get more gang or are just too good haha

Maybe set personal goals. The game doesn't punish being an evil warden, locking everyone up; which is the main problem. If the game discouraged use of armed guards more, and encouraged a more free environment with multiple rooms the gangs can take over, it would by that make gangs harder.