It’s about as straightforward as the title says. I feel, if this is ever achieved, it would drastically improve the dialogue experience, especially for hacks that are dialogue-heavy. Two lines of dialogue with the large font FE8 utilizes means one could make a decently-sized sentence take up more than one A press to read completely, and for someone like myself who has ADHD and forgets what they’re reading midway through, it makes things extra difficult.
Although a jump from two to three lines won’t really solve any major problems, it should certainly help with the presentation and fix problems inherent to the FEGBA style of presenting dialogue, which, while competent, is nowhere near as accessible other RPGS, especially comparable ones on the SNES.
Edit: This, basically.