What is still to be undone?

Was just having a Twitter discussion with one of NRO's younger writers on just this subject (I strongly doubt he was aware of this post). Goes back to the 100 theories of Trump that are mostly versions of the same theory, from different angles: If the GOP (or we) weren't so damaged, he wouldn't have arisen to damage it (us) further, or only a party damaged to the point of unsalvageability could have ended up in this position of being damaged to the point of unsalvageability.

Touched upon some related specifics, so I think I may recapitulate the convo from my side later.