Fast forward to the futu WAAS 200 minimums

Now that the WAAS minimums are going to be 200, same as
ILS, and the first WAAS approaches are going to be
overlaid over standard ILS approaches, the question
arises:

Which approach makes more sense to an ILS runway, use
of the ILS, or the WAAS?

Before you say "good ole ILS", consider: WAAS is going
to have many characteristics of an ideal precision system.
No false glideslopes, infinite range, no backcourse image,
etc.