Perversion is not a solution to deterrence. Moreover, there are grave consequences to disproportionate punishment: all parts of the system would fight against it in different forms, from commiting crimes to prevent being caught, to disproportionate punishments based on the quality of the lawyers, etc.
It would be a much better deterrent to know that if a crime were committed, the punishment came swiftly: the threat of (almost) immediate jail time is much more powerful than the maybe (your life is over).
Again, if a society truly valued freedom, just losing that would be such a great punishment. When you say that such a punishment is not enough its precisely because you dont value freedom that highly.
What brought me to this path was the simple thought exercise: should escaping jail be illegal? How can it be illegal if it is a fundamentally moral act?