In which ways (if any) has Democratic strategy changed to prevent a repeat of 2016?

…nobody is asking you too. We are talking Democratic strategy, not who you should or you shouldn’t pander too.

I think that “giving people something to vote for” is a rather obvious thing one should do in any election cycle. And you can do that as well as basing much of your campaign on character. But you are really rolling the dice if you base the campaign on character, when there are enough people in the states that matter have major issues with Biden’s character.