Several times now C++ enthusiasts and indeed the committee have been told the way forward is the "Subset of a superset" that is, Step 1. Add a few new things to C++ and then Step 2. Remove old things to make the smaller, better language they want.

Once they've obtained permission to do Step 1 they can add whatever they want, and in a few years for them it's time to repeat "Subset of a superset" again and get permission for Step 1 again. There is no Step 2, it's embarrassing that this keeps working.