if POTUS waits to appoint replacement for RBG, and Roberts must step down for FISA related corruption (and possibly for being blackmailed) then presto it's a 4-3 conservative majority and no ties.
if libs are reeing to not replace RGB, fine don't replace her, then perp walk Roberts, gets same short term tactical result as appointing a conservative SC assoc. justice.
appointing Sidney Powell as FBI Director would imply that the Flynn case is resolved beforehand.