Yes, the judiciary will evolve to be in line with the expressed will of the people. This is good. There is no need whatsoever to keep it forcibly balanced between parties.
You, of ALL people, arguing for making sure that the two party system is entrenched is a bit much.
Khanna's solution on refusing to hear a judge is fine
‘‘If the Senate does not exercise its advice and consent authority with respect to a President’s nominee to the Supreme Court within 120 days after the nomination, 2 the Senate shall be deemed to have waived its advice and 3 consent authority with respect to such nominee, and the nominee shall be seated as a Justice of the Supreme Court.’’
but I would want a mechanism to limit endless rejections. I'd make it that rejecting a judge is effectively a veto override and make it a 2/3 requirement. Ultimately there is no way to completely prevent Constitutional hardball, but as we've discussed, I prefer material improvement over leaving it as is because it can't be perfect. If the Senate keeps stalling on a judge, then it becomes the subject of an election - that's what democratic accountability means. Yes, if you managed to stall two years they would stack up like cordwood, but that is - ultimately - a power given to the Senate in Article II. By making it hard to reject a judge you can limit it, but it can never be completely stopped without amending the constitution.