Mental Clause With Metaphor Unpacked

you	'll get	a bird's-eye view [of this majestic city]
Senser	Process: mental	Phenomenon

cf

you	'll see	this majestic city	from a bird's-eye view
Senser	Process: mental	Phenomenon	Angle: viewpoint

Angle: viewpoint is agnate with the Senser of a mental clause (Halliday & Matthiessen (2004: 276):

you	'll see	this majestic city	as	a  bird	sees	it
Senser	Process: mental	Phenomenon		Senser	Process: mental	Phenomenon

a	bird’s eye	view	of this majestic city
Deictic	Classifier	Thing	Qualifier	metaphorical
Senser		Process	Phenomenon	congruent

Halliday & Matthiessen (2004: 294):

[In the like [‘emanating’] type of mental process] the Phenomenon bears no kind of resemblance to a Goal.  But it does show certain affinities with the Scope.  It figures as Subject, in the ‘receptive’, under similarly restricted conditions; and it appears in expressions, such as enjoy the pleasure, saw the sight, have an understanding of, which are analogous to material Scope expressions of the ‘process’ type, such as play a game, have a game.  So we can interpret the rôle of the Phenomenon in the like type of mental process as a counterpart of that of Scope in the material; it is the element which delimits the boundaries of the sensing.