Not sure if I understand the question; it is a question right?
Or is this just a general rant on how poor the functions, and or functioning of the Label Style Composer are?
In general all of the variables for anchoring the label components, have differing results from each other, and
as such are more suitable than another depending on the results on is after.
However, IF one anchors EVERYTHING to the object then it is a little easier.
Once one starts anchoring to other components within the label then the fun really starts!