Related to How to add a newsticker to the bottom of the video?
Wherein I provided an example using Rich Text that does not have the 256 character limit. So, I do not know why people keep mentioning that.
The technique is rather simple and can be put into a preset. You can make the background width fairly large to handle a variety of texts because the remaining space is blank. Then, after applying the preset, it is easy to adjust the simple keyframe for speed and the timing for the end of text if needed.
I will not be adding this feature myself, and I am very unlikely to accept it as a contribution if it can be a preset. A translation and its timing is esoteric. Honestly at the mention of translation, I have to wonder: should this text really be burned into the video, or make subtitles/captions instead?