A history box or back button for displayed text would be nice.
There are engines that do not even have "instant" text. Which is kinda mind boggling, since "instant" text is the normality in computers. You have to take extra effort to display text not at once, but putting each word or letter after the next. Imagine a website displayed like that. Or any text document.
Are there really people wanting text displayed like this? I skimmed a bit on the net, and apparantly the majority sets this to instant, the instant they open any vn type game. So why is this even in games, and if so, why is the default not instant?
I would wanna bet, some famous early vns used that style and when the genre was popularized, they just copied that feature without thinking if that feature enhances the game. It is not, imho, it is distracting, for the simple reason of how our eyes move when we read text. While I am not a T-Rex, I do react to movement such as moving/appearing text. Maybe it was voiced vn and they had the text appear at the speed of the voice but the vn without voice acting did not change the feature. Some do utter some sound effects while the text appears.
Probably some idiosyncracy, like people using wasd with their pinky on shift, instead of resting position with index on f. I get cramps if I try to rest my pinky on shift with index on d. And I need the little bump on f to secure my position. There I believe the historical reason was some kind of keyboard barrier how many keys you could press at the same time and shift was counted extra, so they did not use esdf, but wasd to get access to that extra key.
/rant