There are quite a few things Id like to see implemented in this vein.
Super Thief : Throughout each game day 3 random objects will be removed from the prison. This includes things like Water Pumps and Power Generators. Perhaps 100% informants would have a small chance of revealing who the Super Thief in your prison is.
The Super Secret 3D mode. Yeah you know the thing I am talking about
Alternative Execution methods: e.g Firing your prisoners from a cannon.
Remove all contraband/ contraband x2
Silence of the prisoners: There is a prisoner in your prison with the taste for flesh, he is killing your prisoners and eating them. You must stop him or face heavy fines and bad rep.
Just to name a few
Derry