Practically speaking, different people testing trigger weights on DA pistols like CZs with a bunch of different shaped triggers would be problematic.
Regardless, your proposal would handicap the most popular platform in the division (DA/SA) to a much greater degree than their striker fired counterparts. Shadows come from the Factory with sub 4# SA triggers, so no Shadows? Even a high mileage 75B is under 4#.
The more asenine rules you create for the Production division, the more difficult the enforcement, handicapping honest shooters and giving the advantage to those who disregard the rules.
In reality, the "Production arms race" is all in your head