Aside from not having to add 35 "set a data value" actions just to populate an entity with 35 properties/fields, it would also be very useful in terms of reducing multiple integrity checks. This action would allow you to change multiple properties/fields for an already existing entity in a single action. I guess the condition to check an entity's bundle type would be required in order for a particular entity to be available to this new modify action.
The basis for this feature request comes from discussion in
fago suggests the following as a potential methodology:
select the entity and the properties in a first step and get forms for all properties then.
PASSED: [[SimpleTest]]: [MySQL] 329 pass(es).
FAILED: [[SimpleTest]]: [MySQL] Unable to apply patch rules-modify-entity-action-1421368-36.patch. Unable to apply patch. See the log in the details link for more information.