MicrosoftV2 of the PowerShell SDK will not fix some of the problems listed above. It won't fix lack of support for the pipeline, for instance. Microsoft has a ton of work to do to make sure that the issues evident in V1 of the SDK are addressed in the future (see https://office365itpros.com/2023/02/13/microsoft-graph-powershell-sdk-prob/). I've shared details of these and other issues with the development team.
BTW, it's possible to use managed identities with the SDK by first connecting to your Azure account using a managed identity and then using the access token secured by that connection to connect with Connect-MgGraph. We cover development with the SDK extensively on Practical365.com (for example, license management https://practical365.com/microsoft-365-license-graph-sdk/).
