Support for expansion modules / sidecars on desk phones
I noticed that a few phone manufacturers now support Teams on desk phones - such as the Yealink T56A, what it doesn't support is the expansion modules that are extremely useful for receptionist. Skype for Business supported the Yealink T48G and the EXP40 expansion module. The T56A supports the EXP50 module but Teams doesn't support the module, only the desk phone itself.
Agreed, Teams needs a speed dial list displayed on the phone and sidecar support for receptionists. The oversights on these units are just galling, and the lack of communication about the roadmap for phone features is nonexistent. Rolling out phone projects is definitely impacted by this lack of feature parity with the S4B phones - they really jumped the gun on this.