Well, I do play one game that's similar to that, but I think it has more animations than the average Visual Novel, so I'm curious if that will cause any interference. I'll test it out when I play next to see how it performs, but either way, I think this will be a very useful feature.
The Text removal expansion scale looks really promising. That sounds like an excellent feature that will be a big help.
Outside of that one VN-like game, I'm not playing any other Visual Novels right now, but I do read manga frequently. I will certainly test them out sometime :)
Thanks so much for adding these features!