For example, the minimum focus distance is the same for a given lens whether you're full frame or crop, so the mfd for a given effective focal length is generally smaller for a crop (to put it another way, at magnification of 1x, an object 36mm wide fills a ff sensor, but an object 22.5mm wide fills an APS-C)
You usually have to stop down a long way to get enough dof with macro, so the extra dof in APS is a plus.
That's having your cake and eating it, too. The 'deeper DoF of APS-C' applies when you're talking about identical framing, meaning a greater subject distance with APS-C. When you're comparing APS-C to FF at 1:1, the APS-C frames a smaller subject and gives a shallower DoF - that's two advantages to FF, right there.
I don't see how these are really advantages to full frame. Let's go through the scenarios.
(1) you are not distance limited (that is, you can compose the shot you want on full frame without cropping). On APS-C you can stand further back and get the same shot which means more DOF.
(2) you are distance limited on both full frame and crop. That is, you need to crop in both formats to get the desired composition. This is the scenario you are suggesting that you get more DOF in full frame. But actually, in both cases you need to crop to an area that corresponds to a smaller region of the sensor than APS-C. As far as DOF formulas go, the right circle of confusion to use is that corresponding to the subset of the sensor whose pixels are used for the final image. So DOF is the same for both formats in this case, and APS-C puts more pixels on the subject.
(3) in the intermediate case, where APS-C is not distance limited but FF is (and therefore has to crop), it is almost the same as case (1), except that some subset of the FF sensor is used -- so it's analogous to APS-H versus APS-C. In this case, you still get greater dof with the crop, but you also put a moderately reduced number of pixels on the subject.
So I don't see where the scenario is under which FF really wins (or really has more dof for the same composition)