I personally liked ME:A and other than a few issues with graphics, to me it is a solid game. Can things be improved...yeah, it reminded me much of Dragon Age: Inquisition, and that game like ME:A is large with much filler content. I would have preferred a bit tighter story, less love interests, and more individual development.
As far as the next ME with Shepard and the Milky Way, well, I wish Bioware would leave it alone and NOT go there. To me they wrote a story that basically finished the Milky Way for future content without some pretty major rewriting, and to me that is fine. I would much prefer another Andromeda game...but I think that ship has sailed. Personally, I would have much preferred that Andromeda had started with waking up on the Nexus and have all the events up to the first ship arrival be the first game. Have ME:A be the second game and continue the story, again with less people, and more individual development...less people being less teammates and love interests with more time with each they have left.