For Large Customers with very Large data volumes to migrate where volume sizes are in region of >=500k, Contacts >=800k

products >= 100k.

The performance is not great where FO is on a Tier 5 where source is Excel files and tool used is Data management imports in D365FO.

Compare this with D365CE and SSIS + Kingsway soft can be used to migrate large volumes of data. And Performance is much better

Why can we not make available better tooling for Data migrations of Large data volumes for D365FO ?

Restricting this to essentially one tool for large volumes isn't great.