It is almost useless because (1) it does not specify a term that should be zero by default and (2) it still requires another court to decide what "reasonable" means in each case, with the time and cost associated with boing to court.
A good ruling would be "by default zero time is allowed, ask a judge for exceptions when justified". If you release the person, release all their possessions at the same time. Need an exception? Make it the burden on police to convince a judge this is justified, not let it to the police to arbitrarily do whatever they want - like 14 months, now reduced to what, 13.9? (exaggeration for a good purpose).
A good ruling would be "by default zero time is allowed, ask a judge for exceptions when justified". If you release the person, release all their possessions at the same time. Need an exception? Make it the burden on police to convince a judge this is justified, not let it to the police to arbitrarily do whatever they want - like 14 months, now reduced to what, 13.9? (exaggeration for a good purpose).