Thinking at Enterprise level there is no possibility to build Applications with reuse/ modularization as part of the architecture strategy using only APP Studio. It would be beneficial to empower the Citizen Developers to access and modify rules at their Class Structure. So that plenty of development time would be saved and corporate specialized teams such as Centers of Excellence (a.k.a. CoE) would also be capable to leverage PEGA without the need of senior specialization.
***Edited by Moderator Marissa to change Product from Pega Express to Pega Platform***