I wish that Microsoft would put a bit more development into the SSMS Database Diagrammer tool. It's OK, for basic modeling, but it's limitations quickly become apparent when it comes to producing presentation quality diagrams.
It would also be nice to include cross-database and non-key relationships. For now all tables must be contained in same database and all relationships in diagram must be enforced with an actual foreign key, which can mean mocking up tables and keys in a scratch database just for the purpose of documentation.
"Do not seek to follow in the footsteps of the wise. Instead, seek what they sought." - Matsuo Basho