…well said, esp. these three points.
i don’t know the a4, use my mnm for midi or mess with the other outputs, so i dunno how useful what i say will be 
but in case it helps:
stacking tracks together has netted me many of my favorite results. i’ve gotten great sounds out of single tracks as well, but stacking has often been the key to overcoming the “thin sound” new users have frequently found frustrating. a useful part of stacking is the bus system, which allows you to get way more creative with the effects machines. it’s not as vast as a daw’s bus system of course but (like many things elektron) it’s often enough to get you there with some creative thinking.
personally i found an enlightening introduction to stacking in the soundpack that elektron hq released in june 2013. lots of the patterns and kits are set up in ways that take advantage of the possibilities.
worth mentioning: the mnm matured during the elektron-users forum era. its search engine still works, so once you’ve absorbed the manual & tarekith’s doc, i’d head over there, raid the files section and read through old threads, it’s a gold mine.