While I totally agree the fonts should be bigger, a fixed UI like this would break when font sizes are dynamically increased. It's not like a web page or browser where all the elements are (or should be) dynamic when font sizes are arbitrarily changed. It would take a fair amount of complex work in the IC to make the fonts change on-the-fly. That said, they could pre-design several fixed "small/medium/large" display options with different font sizes.. so while they're at that, just add in a "Classic IC" design option as well.