Parts should look damaged after a crash.

[LHACK4142]

I always thought that it looks really strange when your rockets explode but the parts that survive look good as new. In KSP2, I think it'd be good if the devs make it so that surviving parts look damaged. Maybe just an overlay.

[Space Kerbalisation Tech]

perhaps this mod will help (a bit old, might not work on latest version)

 

[jastrone]

yhea probably not mesh deformation but texture changes yhea. and example if you land on duna your parts get a bit covered with red dust. 

[t_v]

This would have to be implemented with some sort of texture generation, because adding up to a few dozen textures for each part would blow up the file size and make adding parts with mods much harder. And I think that if it is added, it will be a mod because that small level of detail would not be implemented in the base game.