They would be about the criminal activities these gangs would migrate to, like kidnapping, extortion, bank robbery, human trafficking, cargo theft, animal contraband...
Murder, Rape, GBH, Weapons Dealing, Police Corruption, Financial Crimes (doubt the last one but one can hope).
Pretty much like it is now I think.
CSI: SEC sounds like a thrill a minute.
I'd watch a crime show (as long as it wasn't CSI based..) about financial crimes... but then I'm a bit weird, I watch bloomberg news for background noise.