There're some game branches which are only possible with high enough Wits -- examples would be Lena being able to alter her contract with Seymour, Ian supporting Cindy/Wade to the point they might patch things up, or pretty much entire dialogue during ch.10 date with Minerva. Some of the dialogues which improve relationships also have no charisma equivalents; not everyone appreciates mindless pep talk.I haven't had much trouble raising my Charisma and other stats while mostly ignoring Wits. And from my experience, most dialogues that offer a "better option" for high Wits will have the same for Charisma as well.
There's also plenty of lines added to Lena's and Ian's dialogues and internal monologues if their Wits are high enough. Though granted, if one has no interest in extra content then it's not much of a benefit.
Last edited: