Several eLearning standards that are supported by various authoring platforms and learning management systems but they all have pros and cons. Oftentimes you will need to make a call on which standard best supports your clients' goal, taking into account things such as the delivery format, whether tracking is required and to what degree, how the course will be consumed, etc. So it’s important to understand the peculiarities of each eLearning standard, and which one to choose for specific tasks.
In your platform, you may have a lot of learning content, thus the time it takes to organize, view and update all of it may seem daunting. It can be useful to enable learners to curate content in the platform, by hiding the content they are not interested in any given moment, and marking content as outdated if it is no longer up-to-date or valid.