I've always mantained that, if MPL training on real aircraft was to CPL/ME standard (without the IR element), then everything else could be conducted in decent simulators. Boring holes in ADF holds in Senecas on one engine always seemed rather irrelevant to me - but basic airmanship and flying skills are essential.
But 'real' asymmetric isn't even considered to be a 'core' skill....
The MPL can only be associated with an individual airline. Many have now realised that the cost of all this synthetic training, plus the increased flying training needed to pass the final TR check, won't make the cost any cheaper than the current 'traditional' route. In fact, it'll probably be more expensive!
And where do the MPL advocates think all the simulator instructors will come from?