re: Enceladus
As expected, many Europa like 'stretch marks' cross the surface, but unlike Europa and more like Ganymede, lots of uneroded craters. Many transitional type craters seem to be eroding by fading away. There's geology (whatever it's called for satellites) goin' on here. Gotta be melting water sub-surface, but deeper than on Europa and maybe just a slushy mixture of 'ices'.
One surprising discovery is those horizontal black lines to the right of many photos. Obviously artifacts from a civilization.