Actually the longer the government delays to implement C-6, the more victims (i.e. the applicants who would have qualified under old rules since effective date of C-24) build up upon the effective date of C-6.
If I were the policy maker, since the purpose of C-6 was to repeal the unfair part of C-24, it should implement ASAP to show the good faith to the victims of C-24. If there is backlog building up, the priority should to given to the victims of C-24 first.
This is how other civilized countries (such as UK, Australia, NZ) did in the past. The way how C-24 implemented retroactively and how it's repealed by C-6 shows how backward and lack of human rights this country is.
For example, when Australia and NZ changed their citizenship laws, not only the PRs who landed before the new laws were not impacted, there was even some grace period for the new PRs who landed after new laws. When Australia changed from 2 years to 4 years residency, the new law implemented after 3 years of passing in Parliament. When NZ changed from 3 years to 5 years residency, the new law implemented after 5 years of passing in Parliament.
When UK Labour government passed the new citizenship law before 2010 general election in 2009, the planed implementation was 2011. But after the election in 2010, Conservative government scrapped the law without going through the whole legislation process again in Parliament. Same as the ID card programe introduced by Labour government, Conservative government scrapped the law within one week of winning the election.
UK once changed immigration rules for residency requirements for PR and applied retroactively. It was challenged at court and the government lost the case as it violated the human rights of immigrants. After the court order, the government implemented it within days and fast tracked victims' applications.