Revit MEP has a tab in the ribbon called Architect, so does Revit Structure.
It weird to me that there is no Electrical tab, no HVAC tab, or no Plumbing tab. A Fire Protection and Technology tab would be welcome too. Just so you Revit developers know, people in the MEP world almost never do all disciplines and never all at once. It would be nice to have more options per discipline rather than everything option in one.
On a very basic level the Architect tab can be reminder that Revit MEP is an architectural program trying to be a MEP program. Subtle changes like adding discipline specific tabs can go a long toward making us believe you understand our needs.