Forbidden Fruit Koga-Miyata fan over here checking in. Loved all that information! Thank you so much for taking the time to write it out well and link to things! (somebody get this guy a medal!)
Late-'80s to early-'90s is my era of preference due to their offerings being all well equipped (nice tubesets for frames) but most importantly, for those freaking sweet graphics. Someday a 63cm example will be mine. Race or touring.