As always the problem with doing all of the above lies with the bleeding hearts club coupled with the Human Rights Act who will vigorously oppose ANY attempt at making life less cushy for offenders.
I recall that way back, the cells in the police station I was based at contained simply a raised concrete platform for a bed – no mattress, no covering – nothing at all. It made spending a night in custody a somewhat uncomfortable exoerience and one that the local yobbery were keen to avoid.
Then along came a team of custody visitors who reckoned that this was ”unfair” because the cell’s occupants were ”innocent” (not having been convicted) and the Met had to supply matresses and blankets for the prisoners detained in custody.
Mind you, the stroppy ones still had their nice comfortable matresses & blankets removed from their cells …… for their own safety of course you understand.