Dean_Gross , good question. As long as you are licensed for MDA it is really easy to enable without really having to configure MDA. Enable integration and you are good to go, it is the supported way to integrate.
If you are not licensed, I did create a function app that brings all the relevant events to Sentinel here O365-ActivityFeed-AzureFunction/Sentinel/mipservice at master · OfficeDev/O365-ActivityFeed-AzureFunction · GitHub. It is based on similar code and steps as this Advanced Incident Management for Office and Endpoint DLP using Azure Sentinel - Microsoft Tech Community.
I've avoided to document the availability of the MIP synch function since the MDA function doesn't require the custom components. We will take your feedback into consideration as we are improving the product.
Thank you