I suspect that since it has been rattling around since February, a Crown Brief has been assembled and forwarded to the Crown (local, regional or MAG in Toronto) and it is sitting there. Whether it is in a pile in an in-tray or being assessed for a carefully crafted response (one way or the other) who knows. Whoever makes the ultimate decision owns it.
Police in Ontario do not have to seek Crown approval to lay charges but it absolutely does happen in complex, high-profile or sensitive cases.
I doubt the MAG would ever issue definitive, prescriptive or proscriptive guidelines to its Crowns. They want to maintain prosecutorial discretion and do not want to own a decision.
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I'm of a couple of minds regarding the proliferation of home invasions in the GTA. On one hand, they could simply be random criminals doing untargetted invasions, but there are a lot of ethnic enclaves in Toronto's suburbia and I wouldn't rule out ethnic organized crime, either going after their own community, a rival community or trying to exercise control over a particular turf. Certain cultural communities are known to favour large amounts of jewelry or cash. Not a lot of home invasions in farm country.