DMPlex implementation is better integrated within PETSc. Smaller memory usage. Developed to support multiphysics and higher order discretizations.
Allow user to select order of basis functions independent of the mesh (which defines the geometry). This permits higher resolution for a given mesh.
Same mesh for dynamic and quasi-static parts (dynamic -> quasi-static, quasi-static -> dynamic, complete cycle)
Moment tensor point sources provide a mesh independent deformation source that is better suited for Green's function calculations than slip on a fault surface via cohesive cells.
Will provide significant speedup to simulations run by many users because most are running on desktop machines that have GPUs.
Requires interpolation of fields between different meshes/discretizations and may require extrapolation of solutions when quasi-static problems span a larger domain than the dynamic problems.
Use fault constitutive model to control slip on fault except during episodes of prescribed slip. Need some way to describe when to turn on/off prescribed slip.