Keep up at the back!
CDFA has been mandated by EU-OPS and, therefore, the requirement for an MDA has been removed.
If you can't or don't currently fly a CDFA there is, I believe, a three year transition period but at the end of that time you will be expected to use CDFAs on every NPA. That will remove your requirement for an MDA and you will be flying to a DA(H).
It's not an MDA anymore, it is a DA. It doesn't matter if you go below it carrying out a go around.
Have you heard of "Lower Than Standard" and "Other Than CAT 2" approach ops? That means that I can fly an ILS to a minima below the conventional limit. That means I can fly a CAT 1 ILS in 400m RVR instead of 550m. But I suppose it's wrong to do that too.
It's all part of EU OPS Subpart E. Have a look!