Ternary or other functional conditional operator for data mapping in process composer

Description

In the process composer (of what was formerly PCS) allows you to map the input and output data for activities. The mapping is done using oracle's simple expressions and there are a variety of functional operators to use. Unfortunately there is no way to conditionally map a value without either using a DMN, an integration, or an exclusive gateway. The problem I have with exclusive gateway is that often the data I'm mapping isn't of "business concern" and therefore shouldn't really be in my BPMN map. For example, if I am mapping input data of a notification activity and I