A loss of a ride is always sad, but I don't mind Galactica getting scrapped, it has so far been the only ride to make me feel sick. I have once ridden a Disk-O, and I don't think it's that bad of a ride. The restraints, though, aren't that comfortable to men...
What comes to Rabalder, I don't see the point in replacing the coaster with a near replica. But of course there's somewhere a good reason for it.