I'd like to see a Eurofighter eventually come to Knotts as well but not to replace Silver Bullet. I think the north east (or lower right if you're looking at a park map) section of the park would make a great area (1.3 acres) to put a Eurofighter. They can easily transplant the existing kiddie rides in that area to other parts of Camp Snoopy.
ALSO, Construction walls current going up around Boomerang. I expect we'll see something announced sooner than later.