[tfgg]

> A combination of MOND and dark matter matches most observations very well, far better than dark matter in isolation.

Isn't that unsurprising that a theory with more degrees of freedom can fit the data better? It's hard to say if this is interesting without knowing if it fits data significantly enough better to make up for the extra parameters. Dark matter (well, Lambda-CDM) is appealing for being able to fit a wide range of observations with a fairly simple model that's entirely compatible with GR.