^Meh, I too love the Jack Rabbit, and I hope it stays for many more seasons, but seeing as most people these days seem to think that any slight bump on a roller coaster qualifies it as brutal, it's just not a viable ride for CC. Besides, for it's small capacity it sure takes up a lot of room, power, and it doesn't exactly look good on the brochures.
Now take a Boomerang, sure, we hate them because they are everywhere and almost everyone has ridden multiple copies, but from the park's perspective, and especially CC's, it's a thrilling, compact, cheap, good-looking ride that is easy to get parts for and has great capacity. Some guests may notice that it's a copy, but who cares? As far as CC is concerned, a major looping coaster is a major looping coaster, it'll be a huge marketing hit and will look fantastic on the brochures and on the skyline.
Besides, look at the position CC is in: this year they took in a rusted piece of crap and fixed it up - that was their big new ride for this year, and it was a huge marketing bonanza for the park. Think of the effects a boomerang would have. They just don't seem to have many options right now.
Of course, hopefully they would keep the Jack Rabbit and place the Boomerang in the employee parking lot, that would be a perfect scenario.