For the discussion, both criteria considers RNP to be non-precision.
VEB and GQS are good concepts, but need to be developed further.
With either criteria, with RNP, VEB, you have a minimum of a 200' obstacle clearance with a 50 foot minimum momentary descent, hence it will never get below the 250' min.
The procedure design by third parties is usually very platform specific. The FMC combinations can act differently, even between same aircraft with different airlines, depending on the configuration. Obstacles must be independently mapped and verified.
The FAA and regulators require significant amount of money be spent to certify and validate the procedure for use, and there is ongoing maintenance of the procedures for every cycle.
Third party developers include also EO, weight limit, and DEP procedures, which are not defined in the criteria.
All of this costs a lot of money...