I was at a friend's house installing twin for them on their Dell XPS 13 Developer Edition when we ran into the issue with font size. holy snap on a 4K 13" display everything was so tiny that Twin was unusable. It is also an issue with a TTY session as well, yet when running twin through X the font was utterly tiny. the dot in this i on my 1080p monitor was about the size of every character. Is there any way to change font sizes?
More and More people will be getting high resolution displays and this issue will become more prevalent as time goes on. This isnt an immediate issue but should be looked into at some point.