Hi FataMorgana,
yes I can answer this question - MPAAD is the system without cables - everything including cutter is in one box on the bottom of the container. The ban is not global but the ban is for students and skydivers with A and B license. In the other words for skydivers which are mostly using big bulky canopies with long closing loops. Problem with this system is that it cuts closing loop at the bottom of the container and after cutting the length of closing loop is still too long and closing loop needs to snake out of the bootom container, reserve canopy, closing flaps, reserve pilote chute.. There was an problem that long cutted closing loop get stuck somewhere in the rig and this cause some malfunction. The m2 is complete different system. Few years ago I also have an MPAAD in one of my rig but I rather change it because I like safer AAD. M2 or Cypres, vigil have cutter located in my rig in one of the closing flap of reserve so it cuts closing loop much closer to pin.
Also the big advantage of m2 is the informations what I can get it from after jump. cypres gives me only the jump counter. The m2 gives me this useful info after every jump:
1. Opening altitude of the last jump
2. jump counter
3. GRAVITY index of the last jump (maximum falling speed of the last jump in the activation zone expressed in percentage, while 100% is the activation speed of the device version currently being used)