The irony is that the Republicans can keep RBG’s seat open a long while.
I don’t think so. As we know, Roberts has some “moderate tendencies” (Obamacare decision + I don’t think he is completely solid on abortion and religious freedom either). What kind of justice Kavanaugh will be remains to be seen. Some people say he is similar to Roberts.
No, we need every pro-Constitution justice on the Supreme Court we can have.