I have the teasing feeling that the band is unfurling something big. Maybe the development of mankind. (although it sounds a bit too epic).
You may have noticed that since Haven, Stanne complains about the meaningless realtions between human creatures, about the mechanic thinking, about what the world has become.
In Haven he is the one to descover the world's misery and the one who needs shelter in this artifical construction - society.
In Character Stanne sings about the lack of any means that could help a single soul, a single character connect to society and be a part of it. I think Stanne sings about how impossible it is for a complex structure (someone's character) to be a part of a community.
Back in the days of the first 3 albums, the conception was not really clear and purposeful but maybe Stanne later decided he could develop it and make an engrossing, thoughtfull story.
Maybe...the new album continues where the last ended.