The ascetic aspect to a Judge's life is pretty critical to the strip and the character: a judge receive no rewards for his service, except the honour of serving.
I always had the vague feeling that what stopped the Judges from using all the fancy life-extending technology was that they were basically a fairly conservative outfit ... "Giving crippled Judges giant robot claws and sending them off to the Academy of Law to scare the kids is the way it's always been done!"
It's totally Tommy 
, but I remember being disappointed when Dredd got new peepers in City Of The Damned
. One of the reasons his blinding had such impact was we knew all personnel injured in the line of duty were entitled to was a stick and a teaching post.
Fitting Dredd for CCTV struck a bum note because it seemed like special treatment. Unless functional immortality becomes standard for all Justice Department employees, the events of Carousel (Megazine 375)
risk falling into the same category.
The idea of presenting Carousel
as no big deal was probably (in part)
to present it as business as usual, but it wouldn't have hurt to establish the technology and the practice as standard by showing a few pensioners getting a makeover in the months before Oswinvasion 
 But if Hershey had announced staffing levels meant geriatric Judges were getting compulsory makeovers, we'd all have realised what was happening and started moaning in advance