Sadly, I can't seem to dig up any links; many foreign language fanvids I've watched tend to disappear, so if I did see any in the past, I'm not sure they'd still be up. I did remember this one Guardian fanvid that uses text creatively, and might give some inspiration: [镇魂 Guardian] CRACK. I also remembered a constructed reality/au fanvid (for Rurouni Kenshin) that puts spoken Japanese dialogue up on the screen:【浪客剑心现代衍生|斋藤一X比古清十郎】雨系列之一. That's as close as I could get with links.

Have you thought about using both the translation and the original language so they appear simultaneously, instead of alternating them? I think using complementary fonts would look good graphically, if they appeared together.