You've actually answered your own question. It will pen in the otherwise activist Judiciary.
It's actually much easier to impeach a federal judge than it is to Ammend the Constitution. Impeachment requires a simple majority of the House and 2/3 of the Senate. Ammendments require 2/3 of heach house, plus 3/4 of the legislatures in all 50 States. Make that both legislatures in bicameral States.
Tell you what, you go to work on getting them impeached and I'll continue to work on the Amendment. When the Amendment comes around, I won't support it if you're achieved the goal. Otherwise, you support the Amendment. Deal?
If the Constitution as it stands doesn't pen in the Judiciary, how can an Ammendment?