Sounds about right.
We can use tags (assess at each ASCI) to apply tags to machines which are at certain stages of the whole process, to automate the changing of policy and task assignments.
eg. Change policy to decrypt.
Then auto-tag Win10 laptops with MDE installed, but disks decrypted - this tag can be used in task assignment for a deployment task to uninstall MDE.
Then eg. auto-tag a Win10 laptop with no MDE, to catch an assignment of deployment task for MNE.
Then obv when MNE installed, the MNE policies will take effect.
Note that MBAM requires that you setup and manage multiple servers for different facets of the MBAM solution. By contrast, simply use ePO for MNE to provide a streamlined management experience.
For a small environment, MBAM can be set up on a single physical server or virtual machine.
With MBAM, you can easily suspend and reenable Bitlocker.
MNE has no practical way to suspend Bitlocker. It requires a very convoluted process of copying files to each system and running scripts manually to temporarily disable Bitlocker for any OS upgrades and firmware updates.