uuuuuuugh
so like
I understand you a little, but the Morgan filler episode is crucial simply because the new Morgan makes no rational sense without it - its good character building to show us some of that. Secondly, in the world they've built, it should be a fact of life that cheap deaths happen. In fact, those are the best ones the show can offer sometimes, because it's just more real. Sometimes you don't have a showdown with a vigilante cop gone mad, sometimes you don't go down fighting 100/1000's of a horde for a sacrifice. Sometimes you go down because you didn't see the guy standing behind the tree and that is good.
Also I just wanna drop my theory in here: Morgan's appearance is going to return Rick to humanity (sad for all the bloodthirsty people who think Morgan somehow has messed up so far) and this season will probably heavily focus on his efforts to do so.