Both when I used RPGMaker and when I'm making VNs, text formatting is consistently one of my most tedious things to handle. It's really easy to put a few characters too many on a line so that some of them push over the edge of the text boxes. Especially in english, where letters are different sizes and the fonts with the maker and the in-game fonts aren't the same. It was total guess work. Easily 90% of the bugs I didn't catch myself were either the text being too long on a line, being too short (cutting off weirdly 2/3 on one line while not doing it on others, it looks weird), having text boxes with different amounts of text randomly, all sorts of problems.
I can't fathom how annoying it would be if there were ways to increase the text size. The stuff going off the right edge or the bottom... ugh.
And God forbid if there's any changes to the text. Changing words because playtesters weren't familiar with them, adding reminder text and clarifications when it was vague, moving around minor reveals to make the story flow better. All of this changes how much text is on the screen at once, so yep: you've got to do the whole process over. It got to the point where I decided that less text was better just because it was less to fight with.
If you've never been through it, you don't know how many tedious back and forth hours it takes to get it right with even one font size.
