Yes, I understand what Baumgarten's intentions were, but did he really "create" a science, or did he really "just make it up as he went along?"

Is aesthetics ever really an objective science?

In practical terms, the aesthetics of an object is largely measures by what its last auction price was.

When it comes to architecture, I'm much more interested in visual literacy. I haven't read it in something like 25 years, but Arnheim's The Dynamics of Architectural Form might be a better base here than Baumgarten.