As your title rightly said every regime come onboard with it own agenda and manifestos and if trump has done his by printing new notes to avert economy collapse then Biden is welcome with th whatever manifesto he wishes to adopt. But the Truth is US is a great nation which will survive what ever comes. Let just wait and see after the court cases to see who the real president will be.
There are just two Demo and Rep. I'm not from US but somehow I can read most of the news there and yes it appears like the election isn't over yet. No matter how strong Trump's evidence will be, it's very unsure if he really will sit reelected when all media out there is against him. Trump doesn't want war.
Biden might just do the opposite. The war now isn't about military power though. Its economic war.