Having operated all of the original KI rides that were still around when I worked at the park in the early 2000's, the Grand Carousel was on a different level. Even though it wasn't the biggest or most exciting ride, it was a joy to operate for hours at a time and take in the history and beauty. Do the ride operators still have a spiel that indicates the age of the carousel? I always enjoyed announcing that before the start of each ride cycle.
The park has at least one extra horse and they would consistently have one in the shop, year round, refurbishing and repainting it. They had them all on a rotation. I don't know how many are original, but an educated guess tells me that it's the majority of them. (They don't build 'em like they used to).
From my experience, the entire maintenance team really took pride in taking care of the carousel. For example, when the band organ would go out, they would lobby for the resources to get it back up and running. Which seems to still be a continuous battle. (That band organ is finicky and fixes can be costly and time consuming). The operations crew really took pride in it as well. I recall one of the supervisors would bring newspapers from home to clean the mirrors since they wouldn't leave streaks behind.
Oh and the lights that were added during Winterfest are terrific!