For me, it's whatever is easiest to administer. If there are contentious components to Bill C-63, then I feel as though I'd capitulate to government folks who know how things are administered to extrapolate components of the Criminal Code or pieces that might be up for debate and then create other pieces of legislation that might work better within the system.
I guess that's all I can really say on that topic. I don't see an issue with them being separated, so long as they're effective and they work within the system.