I agree there's going to be a reckoning for all this govt spending going on.
However, hiding your current assets from the CRA is only one piece of the pie that they can eat off your plate. If you're earning significant income on your capital (unlikely through interest, since all central banks are in a race to zero percent interest), it has to be via some other investment, and more people are going to claim capital losses rather than gains in the next couple of years.
Other pieces of the the pie that are unaffected by moving your assets offshore are income tax, sales tax or consumption taxes, clawbacks to government assistance (OAS, CPP, EI, welfare, etc), raising the fees for everything the government provides - permits for housing, driving, fishing, etc.
It's going to get very expensive to live in Canada after all this is over.
I think these are probably more likely avenues of taxation than going after people's current assets. The government is slowly devaluing everyone's savings anyway by printing money left, right and centre, so hiding CDN dollars in an off-shore account is not going to save you from a $0.40 loonie,. Not unless you perform some kind of foreign exchange, which can be done legally anyway, without paying the hefty set-up fees for off-shore banking.
Bottom line, I don't see the benefit of moving your assets. If you really want to escape the coming shtstorm, renouncing citizenship and finding a country that isn't affected by the financial crunch would probably be a better bet.