Hi @ctwbim, I know what you mean, it is challenging to reconstruct areas like that as the same area/feature is captured differently on each image due to reflections.
If possible, try to adjust the flight plan and increase the overlap and decrease the flight height. We did some tests and saw, with senseFly Aeria X camera, the reconstruction of asphalt was optimal when using the 75/75% overlap and GSD between 2 cm and 2.5 cm.
It also helps to fly on a cloudy day.
As for the processing options. If you would simply like to generate more points, then you consider increasing the Point Cloud Densification option Minimum number of matches to 2. But keep in mind that this can generate a lot of noise.
If you want to make sure that the holes are not visible in the mesh and DSM, then you can consider adding surfaces. They can be treated as constraints and will will the holes in the mesh and the DSM.
I hope this helps!