Constrained scope

[jpn--]

It would be useful to be able to defined constrained or nested scopes. This would allow, for example, an exploratory scope that includes no pricing levers, as well as the same scope that does include pricing levers. Experiments within the contained scope are a subset of experiments in the unconstrained scope, but can be the exact same experiments used for both scopes (although the unconstrained scope would also include other experiments).

Being able to declare a constrained scope might simplify some tasks. For example, when testing pricing scenarios, it can be important to demonstrate the constraints required to achieve targets without pricing and then to relax the pricing constraint and discover the potentially broader set of scenarios.