Disclaimer: Personal Opinion:

Personally, I don't think MOND will be the solution. But I don't think it's going to be dark matter either.

1. We don't have a a way to unify relativity and quantum mechanics yet 2. Dark matter and MOND effects show up at extremely low accelerations.

I have a hunch it's going to need a theory of quantum gravity to properly solve this.

A century ago, quantum mechanics was initially formalized to explain the uktraviolet catastrophe of blackbody emissions.

The difference between the classical emissions curve and the quantum based emissions curbe is very similar to the correction factor applied by MOND. I don't think that's a coincidence.