Bulldogs have taken a huge gamble. Not something I'd be particularly happy with if I was a supporter of their club. Losing Higgins and Cooney may really set them back (even if there is an argument that these two haven't really been present in the last couple of years).
Carlton lost Waite, Garlett, Robinson and potentially a few others. This will have significant implications on their depth and any injuries will see them exposed. They also traded out pick 7. Whether Jaksch, Whiley and pick 19 are worth it, time will tell.
Collingwood lost Beams and Lumumba and gained back Varcoe, Greenwood, Crisp and pick 5. You could possibly be happy with this but as we don't really have a midfielder of the quality of Beams it is difficult to put the loss of Beams into WC terms.
Geelong lost Christensen and Varcoe and lost out on Frawley. They did manage to gain Clark and a pick upgrade but I wouldn't be happy with their trade period in any capacity.