If the High Seas Fleet doesn't come out to fight the RN is going to be looking for ways to go and get them. Otl there was the planned carrier strike in spring 1919 that never happened. Here I could see that plan been pushed harder as the RN will need to be seen to be doing something. The question is if it could be pushed forward so that it goes ahead in say April or May 1918 how does that change things. I can't see any reasonable chance for an earlier attack on the Germans, though attacking the Austro-Hungarians with 184's from sea plane carriers could be done in 1916.