Features Needed To Make Chromium Edge a True Replacement for IE and old Edge

As an Enterprise IT Administrator, I will have some missionary work within my organization for this to get deployed as a replacement for IE and old Edge browsers. But for me to be able to evangelize this product, I and my users will need the following two features for starters:

1. Permit the addition of o365 accounts instead of just a generic Microsoft Account. See attached image. This was the very first thing I attempted after installing Chromium Edge this afternoon.
2. Facilitate the ability to use the 'Open With Explorer' feature and not have to implement the machinations described https://answers.microsoft.com/en-us/windows/forum/windows_10-networking/edge-and-sharepoint-open-with-explorer-doesnt-work/94b04213-ec88-40ce-90af-ffcdfb711db0?page=2