A preliminary implementation of arrow navigation in menus is in the works btw
Internally, it's currently in the Initial menu, Game menus, Conversations, Map bar, settlement overlay and map notifications. e.g cursor is at the center, press left to focus on the game menu, up and down to navigate, press right twice to navigate map notifications etc. It's still a work in progress and the plan is to implement it in other screens as well.
Also, no problem, I like discussions like this