This is probably going to be too little, too late. Anyone with half a brain should be able to see the downturn coming soon. Simply looking at global macroeconomic indicators like Shiller P/E, Yield Curve, stock market indices against GDP or unemployment rate over the last two decades makes it clear the market has run extremely hot and is running on hot air by now.
I won't know what will be the final trigger — 45 playing with fire in the pseudo trade wars or the upcoming cryptopocalypse: All I know is that once the downward spiral has been triggered, everything will happen very fast.
Whatever the "stress tests" might have predicted in a bull market: I don't think anyone will have cared to predict tipping points and negative feedback loops once the underlying assets get worthless. There's just way too much disincentive for banks to building up capital (especially with negative interest) vs. speculating with it in order for this scheme being able to work.
If you want my 2 cents: Hope for the best, but brace for the worst.