I'm working on the forumdisplay templates, and I see an opportunity to make the forumdisplay_subforum identical to the index_forum. I would rather not keep these as duplicates. Customization isn't harmed by removing one of these. It just means if someone wants them to look different from each other, it would be necessary to add a separate template again.

If anyone is aware of a strong need to keep this thing, let me know.