I believe that how you feel about others people, and just as importantly, how they feel about you, is important in socionics.
Obviously not at first. You should bide your time and wait for the relationship to play out. It could take years for some relationships to fully pan out. This is what misled people into thinking that what they feel is unimportant, since it's been so easy to guess typings that felt so right in the heat of the moment turn out to be oh so wrong. But the object of socionics is precisely how you feel about other people, so none of that "it doesn't matter how you feel" stuff for me.
In conclusion, this is a list of people that I never want to see again: