We plan to disable GS1 very soon. From what I have seen only the servers N-Pulse and Valikorlia are still using the old scripting engine. We need to know if there were already plans to switch to GS2 on those servers and where we could eventually help there.
PS: you can of course still use GS1 scripts in GS2 since it is 95 percent backwards compatible, disabling GS1 means removing support for servers that use the old scripting engine.