I think the Biden presidency will be more focused on retaining power, which won't be easy. Winning formerly Republican voters in the suburbs of Atlanta, Detroit, Milwaukee, Philadelphia and Phoenix who were turned off by Trump but not necessarily the GOP was a big factor in winning the presidency but so was the activism of minority voters, particularly black women. There were also, I'd imagine plenty of people who were motivated primarily by the desire to get the orange bastard gone as well as the opposed camps of Biden and Bernie supporters. Keeping all of those folks happy once Trump is history will be challenging.
A lot depends on Georgia in the coming months, the GOP will be gunning hard for the mid terms in 2022 and taking full advantage of the conservative activist judges Trump placed to stymie Biden's agenda. Trump may be disappearing behind the curtain but he revealed how many people in America are ok with racism, authoritarianism and the notion that only one party has a legitimate claim to power. That's not to say that all Trumpies are racists, but all Trumpies were prepared to give it a pass when it suited their interests, more than a few were straight out, up front racists and there are still over 70,000,000 Americans who were fine and dandy with all the appalling shit he did.
IMO America dodged a bullet and that's reason for celebration, but this victory won't necessarily last forever. As with most things, Trump was BAD at doing the whole wanna be dictator thing because he's a lazy, stupid slob. The Coronavirus presented the perfect opportunity to cement his position and he flubbed it. A national crisis where people will forgive attacks on civil liberties until the crisis passes so long as the leader musters the resources of a nation to do what 'must be done'? Please, even George Bush Jr understood that! Trump had a golden opportunity and he...tweeted and golfed. The next right wing populist with Fascist tendencies waiting in the wings could be a lot more competent.