I think some common reasons to not primarily focus on improving the long-run future, such as person-affecting views, non-totalist utilitarian beliefs and the cluelessness objection don’t fit into the 4 categories you described.
I think some common reasons to not primarily focus on improving the long-run future, such as person-affecting views, non-totalist utilitarian beliefs and the cluelessness objection don’t fit into the 4 categories you described.