I posted this over on reddit but its worthwhile here too for dev attention:

you could actually resize the pop up text box on PC, was never officially recognised, but could do it with holding down left click of the mouse over the text box and pressing R3 on the controller (hybrid mouse/controller pc user). the annoying thing about it was after logout it would reset and you could only perform the resize by watching a cutscene. Worked well in mordhona with the wandering minstrel always giving a cutscene. But since 2.5 I haven't been able to do it anymore

I posted a question for one of the liveletters about it and asking for it to be incorp into the main HUD layout option to save the resize, but I guess it had the opposite effect and SE were quick to stop the abuse of being able to read what NPCs are saying...

Of course I am a bit annoyed that a hidden function to resize text, which was a massive quality of life improvement for partially sighted players, was effectively removed since patch 2.5, and it bemuses me why perhaps the most important part of the UI is still not incorporated into the HUD layout options directly for rescaling.

The analogy I can draw would be, its as if you play the game not understanding the text. Or to put it another way, back in the day importing Japenese version FF's to play through before NA and EU releases,...