Well, the simple answer is that you don’t need to. The make face tool will give you options to remove edges evenly, or remove smallest edges. When it does this, though, it will make triangular faces, which won’t smooth well. Whether this is a problem depends on the actual mesh. Remove edges evenly usually gives better results by spreading out the tri faces.
Are you getting the input vertices from some program, or are you doing the input yourself? If you are doing it yourself, one way to ensure that each contour line has the same number of vertices is to make the most complicated line first, then duplicate it and rearrange the vertices to make the other contour lines, without adding or deleting extra vertices.
If the vertices are generated from somewhere else and you must work with dissimilar numbers of vertices in adjascent lines, you are going to wind up with triangles to clean up, whatever tool you eventually use. It’s just the nature of the beast.