Galactic problems

I've started to list the possible signals of dark matter physics, and have even put forward a schematic model. What about these galactic issues? Wikipedia lists two basic problems for cold dark matter, the cuspy halo problem and the dwarf galaxy problem.

Pavel Kroupa goes into some detail about the problems for cold dark matter at scales of 10 megaparsecs and less - a scale which he characterizes as being a success for MOND (modified Newtonian gravity) and a failure for CDM. Nonetheless, I expect that for now, I will instead be interested in whether "partly interacting dark matter" can deal with the problems. This is the idea that, while most of the dark matter is homogeneous, a sector of it - perhaps as big as the baryonic sector - also forms structures: "dark atoms", or even larger objects.