like its difficult to game theory because the sane, logical approach would be to burn down the repo market and take half the funds dedicated to QE and put them towards insulating the credit market and the other half towards business bailouts, some variation on that theme.
but trump wants his cake and like all episodic personalities, he is essentially incapable of making these sorts of sacrifices for the greater good if someone doesnt essentially trick him into thinking that doing the right thing will guarantee his reelection.