Do not scope Loads or Supports to nodes when creating models that you want to exercise in a Parameter Set that will cause remeshing.

Scope only to geometry: Points, Edges, Faces.

If you need a point where one does not exist, open the geometry and split the face to create a vertex where you need it.

If you need a short piece of a long edge, split one of the faces on that edge to create the short edge.

If you need a small piece of a large face, sketch a small closed shape on the large face in SpaceClaim and the face will be split.