Thank you for the question.
As currently drafted, clause 63 tracks the constitutional standard, affording judicial discretion to impose a shorter term of imprisonment only where the MMP would constitute cruel and unusual punishment for the offender before the court. The inclusion of additional mandatory criteria could mean that proposed judicial discretion would be unavailable in some cases where the MMP would otherwise constitute cruel and unusual punishment. For example, where an offender has a criminal record, this could raise charter issues.
Additionally, excluding financial hardship could further impact judges' ability to assess whether the impact of a particular MMP would constitute cruel and unusual punishment, because the Supreme Court of Canada has made clear that financial hardship can be relevant to the assessment under section 12 of the charter. Then, additionally, the proposal to limit judicial discretion to impose nothing shorter than half of the MMP could also re-enact existing charter vulnerabilities, because we know of several cases where courts have found that even half of an existing MMP could constitute cruel and unusual punishment.
Senneville is an example of that, because in that case, they said that for the reasonable hypothetical offender, the proportionate sentence would be a conditional discharge. If an individual presented with similar facts to the reasonable hypothetical in Senneville, it could be that even a six-month MMP, which would be half of the existing MMP, could constitute cruel and unusual punishment.
The short answer would be that, yes, it could introduce new charter vulnerabilities.