Will be most interesting to see their position vis Supreme Court. Considering McCain's position that Clinton not be allowed to nominate a justice at all, Chuck Shumer might as well come out and say that we need to wait for the next president so that the people can have a say in the Court. It's an absurdist position, but not any more so than McConnell's. I'm not in favor of the government grinding to a halt, but I also don't expect for there to be no reciprocity from Shumer, given McConnell's behavior since 2010.
Justice nomination has always been a glaring problem in our system. There isn't a particularly fair way to do it, especially now that justices are contemplating early retirement in order to secure a like-minded successor. I don't know if anyone has put forward broad solutions to the perverse incentives we have now.