The right should be able to move past Trump fairly easily with people like JD Vance, Marco Rubio, Ron DeSantis, Vivek Ramaswamy, Robert F. Kennedy Jr, Tulsi Gabbard, etc. all ready to take the baton and run with it
Ironically it's the left who are going to have a serious problem moving past Trump. For the past decade they have been nothing but the "Hate Trump" Party and every single response to every single position they are expected to take has been "Hate Trump". Well, Trump is going to be retiring back to civilian life in about 3 years. Then what? The left has found every one of their previous positions has become completely distasteful and unfathomable to normal people. Changing the genders of children, forcing men into women's sports, unlimited abortions everywhere, confiscating all guns from every citizen, wokeness and DEI, every movie and TV show starring an insufferable girlboss, the entire left platform is basically unelectable. The only thing holding the left together right now is "Hate Trump" and how's that going to go for them when Trump steps down from the podium and hands the baton off to Vance or someone?