It will be hard to create a game with an imported save from both andromeda and milky way if there will be a possibility to import save would be from LE or andromeda because its not only linked to the decisions you make but the character as well in LE is Shepard and Andromeda Rider, maybe they could create a way to import only the choices you made in both games but that will need a lot of outcomes even if there will be just one ending as default for shepard(reapers dead and gone). As well i don't think its a good ideea to import Rider and his choices and the choices to change the new game in some way, the only good way to add import from andromeda would be like the ones that will come to the milky way from andromeda, if it happends they could tell the story that happend in andromeda. But i think the mix of the 2 galaxy will not be like many think for example it could be after the ending of me 3. Lets think like this: at the time that me 3 took place the Jardaan left the andromeda galaxy and has gone to the milky way with some Angara. After the end of me 3 in some years the Jardaan will get to the milky way and in short this could be a way to link the 2 galaxy. I don't think Rider will return to the next game maybe they could create some kind of quantum entanglement communicator that could allow people from the milky way to talk to the ones in andromeda it could be possible because the geth did heave the technology that helped the milky way people see what was in andromeda... there are a lot of possiblities, as well maybe you could heave not 1 main character but 2, 1 in the milky way and 1 in the andromeda galaxy.... there are so many ways to do the next game if i were to say them all it would take me more then a week to write. We just heave to wait for more news from EA.