(VX) LINEBREAK IN BATTLES

You might have to code in each message as separate lines. Maybe you can modify the script that controls battle messages so that every time the message exceeds a certain length, or every time it contains a special character of your choosing, the script executes and then saves what's left over for another message that executes immediately afterward.

Unfortunately, neither do I. I usually use the event language only. I hope that someone else will offer something.

I don't know how the newer RPG Makers work, but I think you might be able to do something with message stacking. Just calling one message right after another.

Shorten your Vocab lines. "A fantastic, wonderful hit!" can be shorted to "Critical Hit!"

Didn't Dragon Warrior have scrolling text inside of a small text box? A long time ago, when I was experimenting with trying to wrap my head around Ruby scripting, I was downloading text engines and text-modifying scripts. One of them was a continuously-scrolling text script. It's now years later, so I can't remember the name of it. But something like that exists. Perhaps if you can find something like it, you can get more ideas.