That would only work in a non-terminal-based engine (e.g., not Cogmind
). Notice that all characters throughout the entire UI are aligned on a grid of a certain size, drawn from a character bitmap of glyphs in the current font style for that size. Any fonts of a different size will not fit the grid, and given the current architecture it's not even possible to show different fonts of the same dimensions within the same screen. But even if it were I wouldn't want to do that because then the menu would be inconsistent, showing different styles only for the size you were currently using. It's also a huge amount of work for something players will set once and then never set again!
That said, note there are also online full-size previews
here.