What Should We Do With Classic Sites Built For The RYS Stacks Now That Google Is Removing Classic G Sites?

In episode 300 of our weekly Hump Day Hangouts, one participant asked what to do with classic sites built for the RYS stacks now that Google is removing classic G site.

The exact question was:

now that google is doing away with the classic google sites. What should we do with the sites that were built for the Rys Stacks?