Given the fact that:
1) I doubt any of the liberal Justices will be resigning any time soon. (Given the crap the republicans pulled on Obama, they will probably arrange to stay on the court even if they die... "Supreme court Justices Zombie Ginsberg" anybody? I can certainly see them not wanting to reward the republicans with any more court seats.)
2) The Republicans invoked the 'nuclear' option, to make it easier to confirm supreme court justices
3) There is a chance that the political pendulum will swing the other way, and the Democrats could end up taking the white house in 2020, as well as the senate. (Remember, Trump's personal popularity is stuck at around 40% and given the fact that there aren't many more racists around, he may have a hard time winning re-election.)
There is a very good chance that this could all backfire on the republicans. Imagine the type of supreme court nominations someone like Pelosi or Sanders could make now that the republicans have called off any rules of decorum.