I've read that surveys taken of Generation Z Americans show that they are more socially liberal but are also more fiscally conservative, putting them much closer to the Republican Party. They will definitely boost Republicans' vote totals among younger Americans.
If that is the case, it really depends on how much the GOP can use SCOTUS as an alibi on social issues. If they get their originalist majority and issues like LBGT and Persoonhood/Birth Control end up taking up a lot more of the discourse than Obamacare or taxes on big earners, a push to the right won't materialize at all.