"Selection" in Subdivide Mesh

Subdivide Mesh has a big potential, however for some reason "selection" is not yet implemented. The probable reason is probably the issue of creating ngons in some cases, but I believe that those should be handled by the user. "Selection" (That would be actually edge based) could allow for example for subdividing in one direction.

Let's say that we select edges by some method (There are many so I won't be elaborate)

Now that we have our Edge based selection we subdivide it

This could have a lot of potential. You could also make something like this

to

The other obvious reason for this is to subdivide some mesh without having to separate it, which can prove heavy for calculations.