Resource Loading reporting on Tasks/Projects

Currently evaluating ERPNext as mainly Project/Task/Timesheet and Workflow tool for an engineering office.
One feature we currently have that is essential is the ability to pull reports on Resource Loading of employees tasks across many projects. For instance, to ensure we are not over-allocating engineers on future tasks if we know only 40h weeks are allowed (or allocating during periods of annual leave).
This can probably be implemented as a Scripted Report, but before I go down that rabbit hole I would like to know if there is no such feature already available (maybe building a clever simple report)?